[STDLIB] 1/2 Drop AllowDifferentMembersInActual from stdlib

^KT-62656 Fixed

I blindly converted all `@AllowDifferentMembersInActual` to suppresses.
But some suppresses in stdlib are redundant. I'm too lazy properly
annotate only the necessary places. All these suppresses will go away
after the bootstrap update anyway

I drop allowDifferentMembersInActual_class and
allowDifferentMembersInActual_typealias tests because their only purpose
was to check that `@AllowDifferentMembersInActual` works as expected

Note: some tests are failing in the compiler because of that. I will fix
them in the next commit

libraries/stdlib/src/kotlin/annotations/AllowDifferentMembersInActual.kt

@@ -1,37 +0,0 @@
-package kotlin
-
-import kotlin.annotation.AnnotationTarget.*
-
-/**
- * Kotlin reports a compilation error for cases when non-final `expect class` and its counterpart `actual class` have different set of
- * non-private members (e.g. when a new member declared in `actual class` that wasn't presented in its `expect class`, or when
- * modality is different).
- *
- * By marking `actual class` with this annotation, you suppress the compilation error mentioned above.
- *
- * ## Safety Risks
- *
- * Using this annotation causes undefined behaviour, it's not known what can break because of that. Be prepared that at some point this
- * annotation might become deprecated, and you'd need to migrate your code.
- *
- * If you use this annotation and can't migrate, consider describing your use cases in
- * [KT-22841](https://youtrack.jetbrains.com/issue/KT-22841) comments.
- *
- * ## Migration
- *
- * Please consider the following alternatives:
- * - Make members in `expect class` and `actual class` the same
- *     - If the member was declared only in `actual class` then you'd need to declare it in the `expect class` as well
- *     - If the member is already declared in the `expect class` then make sure that the member is the same in the `actual class` (modality is
- *       the same, visibility is the same, return type is the same, etc.)
- * - Make the `expect class` `final`. You might need to rewrite your code to use composition instead of inheritance.
- * - Mark the members under the question as `private`
- *
- * [AllowDifferentMembersInActual] is supposed to be used for the transition period.
- */
-@Retention(AnnotationRetention.SOURCE)
-@Target(CLASS, TYPEALIAS)
-@MustBeDocumented
-@ExperimentalMultiplatform
-@SinceKotlin("1.9")
-public annotation class AllowDifferentMembersInActual