Do not write and read KotlinInterfaceDefaultImpls

This was only used in InlineTestUtil.kt and had no effect in the condition

compiler/backend/src/org/jetbrains/kotlin/codegen/InterfaceImplBodyCodegen.kt

@@ -24,9 +24,7 @@ import org.jetbrains.kotlin.codegen.state.GenerationState
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.descriptors.impl.ClassDescriptorImpl
 import org.jetbrains.kotlin.load.java.JvmAbi
-import org.jetbrains.kotlin.load.java.JvmAnnotationNames.KOTLIN_INTERFACE_DEFAULT_IMPLS
 import org.jetbrains.kotlin.load.java.descriptors.JavaMethodDescriptor
-import org.jetbrains.kotlin.load.kotlin.header.KotlinClassHeader
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.psi.KtClassOrObject
 import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils
@@ -151,10 +149,9 @@ class InterfaceImplBodyCodegen(
     override fun generateKotlinAnnotation() {
         (v as InterfaceImplClassBuilder).stopCounting()
 
-        v.newAnnotation(AsmUtil.asmDescByFqNameWithoutInnerClasses(KOTLIN_INTERFACE_DEFAULT_IMPLS), true).visitEnd()
         AsmUtil.writeKotlinSyntheticClassAnnotation(v, state)
 
-        writeSyntheticClassMetadata(v, KotlinClassHeader.SyntheticClassKind.INTERFACE_DEFAULT_IMPLS);
+        writeSyntheticClassMetadata(v);
     }
 
     override fun done() {

compiler/backend/src/org/jetbrains/kotlin/codegen/PropertyReferenceCodegen.kt

@@ -161,7 +161,7 @@ class PropertyReferenceCodegen(
     override fun generateKotlinAnnotation() {
         writeKotlinSyntheticClassAnnotation(v, state)
 
-        writeSyntheticClassMetadata(v, null)
+        writeSyntheticClassMetadata(v)
     }
 
     fun putInstanceOnStack(): StackValue =

compiler/backend/src/org/jetbrains/kotlin/codegen/SamWrapperCodegen.java

@@ -96,7 +96,7 @@ public class SamWrapperCodegen {
 
         writeKotlinSyntheticClassAnnotation(cv, state);
 
-        WriteAnnotationUtilKt.writeSyntheticClassMetadata(cv, null);
+        WriteAnnotationUtilKt.writeSyntheticClassMetadata(cv);
 
         // e.g. ASM type for Function2
         Type functionAsmType = typeMapper.mapType(functionType);

compiler/backend/src/org/jetbrains/kotlin/codegen/when/MappingClassesForWhenByEnumCodegen.java

@@ -60,7 +60,7 @@ public class MappingClassesForWhenByEnumCodegen {
 
         writeKotlinSyntheticClassAnnotation(cb, state);
 
-        WriteAnnotationUtilKt.writeSyntheticClassMetadata(cb, null);
+        WriteAnnotationUtilKt.writeSyntheticClassMetadata(cb);
 
         cb.done();
     }

compiler/backend/src/org/jetbrains/kotlin/codegen/writeAnnotationUtil.kt

@@ -31,10 +31,8 @@ fun writeKotlinMetadata(cb: ClassBuilder, kind: KotlinClassHeader.Kind, action:
     av.visitEnd()
 }
 
-fun writeSyntheticClassMetadata(cb: ClassBuilder, kind: KotlinClassHeader.SyntheticClassKind?) {
+fun writeSyntheticClassMetadata(cb: ClassBuilder) {
     writeKotlinMetadata(cb, KotlinClassHeader.Kind.SYNTHETIC_CLASS) { av ->
-        if (kind != null) {
-            av.visit(JvmAnnotationNames.SYNTHETIC_CLASS_KIND_FIELD_NAME, kind.id)
-        }
+        // Do nothing
     }
 }