diff --git a/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/ConeAttributes.kt b/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/ConeAttributes.kt
deleted file mode 100644
index fa7354b66de..00000000000
--- a/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/ConeAttributes.kt
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package org.jetbrains.kotlin.fir.types
-
-import org.jetbrains.kotlin.fir.utils.AttributeArrayOwner
-import org.jetbrains.kotlin.fir.utils.TypeRegistry
-import org.jetbrains.kotlin.fir.utils.isEmpty
-import org.jetbrains.kotlin.utils.addIfNotNull
-import kotlin.properties.ReadOnlyProperty
-import kotlin.reflect.KClass
-
-abstract class ConeAttribute<T : ConeAttribute<T>> {
-    abstract fun union(other: @UnsafeVariance T?): T?
-    abstract fun intersect(other: @UnsafeVariance T?): T?
-    abstract fun isSubtypeOf(other: @UnsafeVariance T?): Boolean
-
-    abstract val key: KClass<out T>
-}
-
-class ConeAttributes private constructor(attributes: List<ConeAttribute<*>>) : AttributeArrayOwner<ConeAttribute<*>, ConeAttribute<*>>() {
-    companion object : TypeRegistry<ConeAttribute<*>, ConeAttribute<*>>() {
-        inline fun <reified T : ConeAttribute<T>> attributeAccessor(): ReadOnlyProperty<ConeAttributes, T?> {
-            @Suppress("UNCHECKED_CAST")
-            return generateNullableAccessor<ConeAttribute<*>, T>(T::class) as ReadOnlyProperty<ConeAttributes, T?>
-        }
-
-        val Empty: ConeAttributes = ConeAttributes(emptyList())
-
-        fun create(attributes: List<ConeAttribute<*>>): ConeAttributes {
-            return if (attributes.isEmpty()) {
-                Empty
-            } else {
-                ConeAttributes(attributes)
-            }
-        }
-    }
-
-    init {
-        for (attribute in attributes) {
-            registerComponent(attribute.key, attribute)
-        }
-    }
-
-    fun union(other: ConeAttributes): ConeAttributes {
-        return perform(other) { this.union(it) }
-    }
-
-    fun intersect(other: ConeAttributes): ConeAttributes {
-        return perform(other) { this.intersect(it) }
-    }
-
-    private inline fun perform(other: ConeAttributes, op: ConeAttribute<*>.(ConeAttribute<*>?) -> ConeAttribute<*>?): ConeAttributes {
-        if (this.isEmpty() && other.isEmpty()) return this
-        val attributes = mutableListOf<ConeAttribute<*>>()
-        for (index in indices) {
-            val a = arrayMap[index]
-            val b = other.arrayMap[index]
-            val res = when {
-                a == null -> b?.op(a)
-                else -> a.op(b)
-            }
-            attributes.addIfNotNull(res)
-        }
-        return create(attributes)
-    }
-
-    override val typeRegistry: TypeRegistry<ConeAttribute<*>, ConeAttribute<*>>
-        get() = Companion
-
-    private fun isEmpty(): Boolean {
-        return arrayMap.isEmpty()
-    }
-}
diff --git a/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/ConeTypes.kt b/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/ConeTypes.kt
index f2e63c6a50a..562565bf628 100644
--- a/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/ConeTypes.kt
+++ b/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/ConeTypes.kt
@@ -10,7 +10,6 @@ import org.jetbrains.kotlin.fir.symbols.ConeClassifierLookupTag
 import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.types.model.*
-import org.jetbrains.kotlin.utils.addToStdlib.foldMap
 
 enum class ProjectionKind {
     STAR, IN, OUT, INVARIANT;
@@ -51,7 +50,9 @@ data class ConeKotlinTypeProjectionOut(override val type: ConeKotlinType) : Cone
 
 // We assume type IS an invariant type projection to prevent additional wrapper here
 // (more exactly, invariant type projection contains type)
-sealed class ConeKotlinType : ConeKotlinTypeProjection(), KotlinTypeMarker, TypeArgumentListMarker {
+sealed class ConeKotlinType : ConeKotlinTypeProjection(),
+    KotlinTypeMarker,
+    TypeArgumentListMarker {
     override val kind: ProjectionKind
         get() = ProjectionKind.INVARIANT
 
@@ -62,8 +63,6 @@ sealed class ConeKotlinType : ConeKotlinTypeProjection(), KotlinTypeMarker, Type
 
     abstract val nullability: ConeNullability
 
-    abstract val attributes: ConeAttributes
-
     final override fun toString(): String {
         return render()
     }
@@ -92,9 +91,6 @@ class ConeClassErrorType(val reason: String) : ConeClassLikeType() {
     override val nullability: ConeNullability
         get() = ConeNullability.UNKNOWN
 
-    override val attributes: ConeAttributes
-        get() = ConeAttributes.Empty
-
     override fun equals(other: Any?) = this === other
     override fun hashCode(): Int = System.identityHashCode(this)
 }
@@ -107,10 +103,8 @@ abstract class ConeClassLikeType : ConeLookupTagBasedType() {
     abstract override val lookupTag: ConeClassLikeLookupTag
 }
 
-open class ConeFlexibleType(
-    val lowerBound: ConeKotlinType,
-    val upperBound: ConeKotlinType
-) : ConeKotlinType(), FlexibleTypeMarker {
+open class ConeFlexibleType(val lowerBound: ConeKotlinType, val upperBound: ConeKotlinType) : ConeKotlinType(),
+    FlexibleTypeMarker {
 
     init {
         val message = { "Bounds violation: $lowerBound, $upperBound" }
@@ -124,9 +118,6 @@ open class ConeFlexibleType(
     override val nullability: ConeNullability
         get() = lowerBound.nullability.takeIf { it == upperBound.nullability } ?: ConeNullability.UNKNOWN
 
-    override val attributes: ConeAttributes
-        get() = lowerBound.attributes
-
     override fun equals(other: Any?): Boolean {
         if (this === other) return true
         if (javaClass != other?.javaClass) return false
@@ -160,8 +151,7 @@ data class ConeCapturedType(
     val captureStatus: CaptureStatus,
     val lowerType: ConeKotlinType?,
     override val nullability: ConeNullability = ConeNullability.NOT_NULL,
-    val constructor: ConeCapturedTypeConstructor,
-    override val attributes: ConeAttributes = ConeAttributes.Empty
+    val constructor: ConeCapturedTypeConstructor
 ) : ConeSimpleKotlinType(), CapturedTypeMarker {
     constructor(
         captureStatus: CaptureStatus, lowerType: ConeKotlinType?, projection: ConeTypeProjection,
@@ -207,20 +197,14 @@ data class ConeTypeVariableType(
     override val lookupTag: ConeClassifierLookupTag
 ) : ConeLookupTagBasedType() {
     override val typeArguments: Array<out ConeTypeProjection> get() = emptyArray()
-
-    override val attributes: ConeAttributes get() = ConeAttributes.Empty
 }
 
 data class ConeDefinitelyNotNullType(val original: ConeKotlinType) : ConeSimpleKotlinType(), DefinitelyNotNullTypeMarker {
     override val typeArguments: Array<out ConeTypeProjection>
         get() = original.typeArguments
-
     override val nullability: ConeNullability
         get() = ConeNullability.NOT_NULL
 
-    override val attributes: ConeAttributes
-        get() = ConeAttributes.Empty
-
     companion object
 }
 
@@ -241,11 +225,6 @@ class ConeIntersectionType(
     override val nullability: ConeNullability
         get() = ConeNullability.NOT_NULL
 
-    override val attributes: ConeAttributes = intersectedTypes.foldMap(
-        { it.attributes },
-        { a, b -> a.union(b) }
-    )
-
     private var hashCode = 0
 
     override fun equals(other: Any?): Boolean {
@@ -274,9 +253,6 @@ class ConeStubType(val variable: ConeTypeVariable, override val nullability: Con
     override val typeArguments: Array<out ConeTypeProjection>
         get() = emptyArray()
 
-    override val attributes: ConeAttributes
-        get() = ConeAttributes.Empty
-
     override fun equals(other: Any?): Boolean {
         if (this === other) return true
         if (javaClass != other?.javaClass) return false
diff --git a/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/impl/Impl.kt b/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/impl/Impl.kt
index e0bac7ef278..2154769e817 100644
--- a/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/impl/Impl.kt
+++ b/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/impl/Impl.kt
@@ -6,7 +6,6 @@
 package org.jetbrains.kotlin.fir.types.impl
 
 import org.jetbrains.kotlin.fir.symbols.ConeClassLikeLookupTag
-import org.jetbrains.kotlin.fir.types.ConeAttributes
 import org.jetbrains.kotlin.fir.types.ConeClassLikeType
 import org.jetbrains.kotlin.fir.types.ConeTypeProjection
 import org.jetbrains.kotlin.fir.types.ConeNullability
@@ -14,8 +13,7 @@ import org.jetbrains.kotlin.fir.types.ConeNullability
 class ConeClassLikeTypeImpl(
     override val lookupTag: ConeClassLikeLookupTag,
     override val typeArguments: Array<out ConeTypeProjection>,
-    isNullable: Boolean,
-    override val attributes: ConeAttributes = ConeAttributes.Empty
+    isNullable: Boolean
 ) : ConeClassLikeType() {
     override val nullability: ConeNullability = ConeNullability.create(isNullable)
 
diff --git a/compiler/fir/cones/src/org/jetbrains/kotlin/fir/utils/ArrayMap.kt b/compiler/fir/cones/src/org/jetbrains/kotlin/fir/utils/ArrayMap.kt
index 0a685e62688..d1f8ae0fdd0 100644
--- a/compiler/fir/cones/src/org/jetbrains/kotlin/fir/utils/ArrayMap.kt
+++ b/compiler/fir/cones/src/org/jetbrains/kotlin/fir/utils/ArrayMap.kt
@@ -12,9 +12,6 @@ sealed class ArrayMap<T : Any> : Iterable<T> {
     abstract operator fun get(index: Int): T?
 }
 
-fun ArrayMap<*>.isEmpty(): Boolean = size == 0
-fun ArrayMap<*>.isNotEmpty(): Boolean = size != 0
-
 internal object EmptyArrayMap : ArrayMap<Nothing>() {
     override val size: Int
         get() = 0
diff --git a/compiler/fir/cones/src/org/jetbrains/kotlin/fir/utils/ArrayMapOwner.kt b/compiler/fir/cones/src/org/jetbrains/kotlin/fir/utils/ArrayMapOwner.kt
index 5ed03531cf4..391a3f8a9d2 100644
--- a/compiler/fir/cones/src/org/jetbrains/kotlin/fir/utils/ArrayMapOwner.kt
+++ b/compiler/fir/cones/src/org/jetbrains/kotlin/fir/utils/ArrayMapOwner.kt
@@ -59,7 +59,4 @@ abstract class TypeRegistry<K : Any, V : Any> {
     fun <T : K> getId(kClass: KClass<T>): Int {
         return idPerType.getOrPut(kClass) { idPerType.size }
     }
-
-    protected val indices: Collection<Int>
-        get() = idPerType.values
 }
diff --git a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/types/ConeIntegerLiteralTypeImpl.kt b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/types/ConeIntegerLiteralTypeImpl.kt
index 41c854c2e7b..ef5e47d1c91 100644
--- a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/types/ConeIntegerLiteralTypeImpl.kt
+++ b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/types/ConeIntegerLiteralTypeImpl.kt
@@ -14,9 +14,6 @@ import org.jetbrains.kotlin.types.model.SimpleTypeMarker
 class ConeIntegerLiteralTypeImpl : ConeIntegerLiteralType {
     override val possibleTypes: Collection<ConeClassLikeType>
 
-    override val attributes: ConeAttributes
-        get() = ConeAttributes.Empty
-
     constructor(value: Long, isUnsigned: Boolean, nullability: ConeNullability = ConeNullability.NOT_NULL) : super(value, isUnsigned, nullability) {
         possibleTypes = mutableListOf()
 
diff --git a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/types/impl/ConeTypeParameterTypeImpl.kt b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/types/impl/ConeTypeParameterTypeImpl.kt
index b30dd116665..3dfabd49e0b 100644
--- a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/types/impl/ConeTypeParameterTypeImpl.kt
+++ b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/types/impl/ConeTypeParameterTypeImpl.kt
@@ -6,15 +6,13 @@
 package org.jetbrains.kotlin.fir.types.impl
 
 import org.jetbrains.kotlin.fir.symbols.ConeTypeParameterLookupTag
-import org.jetbrains.kotlin.fir.types.ConeAttributes
 import org.jetbrains.kotlin.fir.types.ConeTypeProjection
 import org.jetbrains.kotlin.fir.types.ConeNullability
 import org.jetbrains.kotlin.fir.types.ConeTypeParameterType
 
 class ConeTypeParameterTypeImpl(
     override val lookupTag: ConeTypeParameterLookupTag,
-    isNullable: Boolean,
-    override val attributes: ConeAttributes = ConeAttributes.Empty
+    isNullable: Boolean
 ) : ConeTypeParameterType() {
     override val typeArguments: Array<out ConeTypeProjection>
         get() = EMPTY_ARRAY
diff --git a/core/util.runtime/src/org/jetbrains/kotlin/utils/addToStdlib.kt b/core/util.runtime/src/org/jetbrains/kotlin/utils/addToStdlib.kt
index a80d9d4f7f6..e92847cd63d 100644
--- a/core/util.runtime/src/org/jetbrains/kotlin/utils/addToStdlib.kt
+++ b/core/util.runtime/src/org/jetbrains/kotlin/utils/addToStdlib.kt
@@ -163,13 +163,4 @@ inline fun <T, R> Iterable<T>.same(extractor: (T) -> R): Boolean {
     return true
 }
 
-inline fun <R> runIf(condition: Boolean, block: () -> R): R? = if (condition) block() else null
-
-inline fun <T, R> Collection<T>.foldMap(transform: (T) -> R, operation: (R, R) -> R): R {
-    val iterator = iterator()
-    var result = transform(iterator.next())
-    while (iterator.hasNext()) {
-        result = operation(result, transform(iterator.next()))
-    }
-    return result
-}
\ No newline at end of file
+inline fun <R> runIf(condition: Boolean, block: () -> R): R? = if (condition) block() else null
\ No newline at end of file