Move .java and .kotlin extension properties to kotlin.jvm

Delete the old ones in package kotlin.reflect.jvm because otherwise the code
using those functions will become red in a lot less meaningful way (overload
resolution ambiguity) than if they're deleted (unresolved import)

Based on the work originally done by @dnpetrov

 #KT-8380 Fixed

compiler/testData/codegen/bytecodeText/javaExtensionPropertyIntrinsic.kt

@@ -1,5 +1,3 @@
-import kotlin.reflect.jvm.java
-
 class Klass
 
 fun foo() {
@@ -12,5 +10,5 @@ fun foo() {
 
 // 2 LDC LKlass;.class
 // 1 GETSTATIC java/lang/Integer.TYPE : Ljava/lang/Class;
-// 1 INVOKESTATIC kotlin/reflect/jvm.*\.getJava
+// 1 INVOKESTATIC kotlin/jvm.*\.getJava
 // 1 LDC Ljava/lang/Integer;.class