Fix tests not to duplicate array constructor definitions as they are available now in builtins.

compiler/testData/diagnostics/tests/inference/commonSystem/theSameFunctionInArgs.kt

@@ -1,8 +1,5 @@
 // !CHECK_TYPE
 
-@Suppress("UNCHECKED_CAST")
-fun <T> arrayOf(vararg t : T) : Array<T> = t as Array<T>
-
 fun test() {
     val array = arrayOf(arrayOf(1))
     array checkType { _<Array<Array<Int>>>() }