Remove default import "kotlin.reflect"

Basic reflection is usable without any imports (with :: literals)

This reverts commit 9503056dd5.

compiler/testData/codegen/boxWithStdlib/callableReference/property/kClassInstanceIsInitializedFirst.kt

@@ -1,3 +1,5 @@
+import kotlin.reflect.KMemberProperty
+
 class A {
     class object {
         val ref: KMemberProperty<A, String> = A::foo

compiler/testData/codegen/boxWithStdlib/callableReference/property/privateClassVal.kt

@@ -1,3 +1,4 @@
+import kotlin.reflect.KMemberProperty
 import kotlin.reflect.jvm.accessible
 
 class Result {

compiler/testData/codegen/boxWithStdlib/callableReference/property/privateClassVar.kt

@@ -1,3 +1,4 @@
+import kotlin.reflect.KMutableMemberProperty
 import kotlin.reflect.jvm.accessible
 
 class A {