[Wasm] Remove WasmForeign annotation

No longer needed since external interfaces are supported

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/ir2wasm/TypeTransformer.kt

@@ -5,7 +5,6 @@
 
 package org.jetbrains.kotlin.backend.wasm.ir2wasm
 
-import org.jetbrains.kotlin.backend.wasm.utils.hasWasmForeignAnnotation
 import org.jetbrains.kotlin.ir.IrBuiltIns
 import org.jetbrains.kotlin.ir.declarations.IrClass
 import org.jetbrains.kotlin.ir.declarations.IrTypeParameter
@@ -100,7 +99,7 @@ class WasmTypeTransformer(
                 val klass = this.getClass()
                 val ic = context.backendContext.inlineClassesUtils.getInlinedClass(this)
 
-                if (klass != null && (klass.hasWasmForeignAnnotation() || klass.isExternal)) {
+                if (klass != null && klass.isExternal) {
                     WasmAnyRef
                 } else if (klass != null && isBuiltInWasmRefType(this)) {
                     when (val name = klass.name.identifier) {

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/utils/Annotations.kt

@@ -26,9 +26,6 @@ fun IrAnnotationContainer.getWasmOpAnnotation(): String? =
 fun IrAnnotationContainer.hasWasmNoOpCastAnnotation(): Boolean =
     hasAnnotation(FqName("kotlin.wasm.internal.WasmNoOpCast"))
 
-fun IrAnnotationContainer.hasWasmForeignAnnotation(): Boolean =
-    hasAnnotation(FqName("kotlin.wasm.internal.WasmForeign"))
-
 fun IrAnnotationContainer.hasWasmAutoboxedAnnotation(): Boolean =
     hasAnnotation(FqName("kotlin.wasm.internal.WasmAutoboxed"))
 

libraries/stdlib/wasm/internal/kotlin/wasm/internal/WasmAnnotations.kt

@@ -17,10 +17,6 @@ internal annotation class ExcludedFromCodegen
 @Retention(AnnotationRetention.BINARY)
 internal annotation class WasmImport(val module: String, val name: String)
 
-@Target(CLASS)
-@Retention(AnnotationRetention.BINARY)
-internal annotation class WasmForeign
-
 @Target(CLASS)
 @Retention(AnnotationRetention.BINARY)
 internal annotation class WasmArrayOf(