Move tests to the right place

compiler/testData/codegen/java8/bytecodeText/checkcast/kt22714.kt

@@ -1,16 +0,0 @@
-// JVM_TARGET: 1.8
-
-fun <T> Array<T>.getLength(): Int {
-    return this.size
-}
-
-fun Any.getLength() =
-    if (this is Array<*>) size else -1
-
-fun testCheckcast1(): Int {
-    val array1: Array<String> = arrayOf("1", "2", "3")
-    val array2: Any = arrayOf("1", "2", "3")
-    return array1.getLength() + array2.getLength()
-}
-
-// 1 CHECKCAST