[native] Drop deprecated Kotlin/Native targets (2/8)

Remove plain references to removed KonanTarget or Family entries. All
the changes in this commit are simple removal of some when-branches
on now dropped entries

^KT-64517

kotlin-native/Interop/StubGenerator/src/org/jetbrains/kotlin/native/interop/gen/AbiSpecific.kt

@@ -63,10 +63,6 @@ class DarwinX86AbiInfo : ObjCAbiInfo {
 
 class DarwinArm32AbiInfo(private val target: KonanTarget) : ObjCAbiInfo {
     override fun shouldUseStret(returnType: Type): Boolean = when (target) {
-        KonanTarget.IOS_ARM32 -> when (returnType) {
-            is RecordType -> !returnType.isIntegerLikeType()
-            else -> false
-        }
         // 32-bit watchOS uses armv7k which is effectively Cortex-A7 and
         // uses AAPCS16 VPF.
         KonanTarget.WATCHOS_ARM32 -> when (returnType) {
@@ -147,4 +143,4 @@ private fun Type.hasUnalignedMembers(): Boolean = when (this) {
     else -> false
 
 // TODO: should the recursive checks be made in indexer when computing `hasUnalignedFields`?
-}
+}