Do not write and read KotlinInterfaceDefaultImpls

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

compiler/tests/org/jetbrains/kotlin/codegen/AbstractBytecodeListingTest.kt

@@ -138,7 +138,7 @@ abstract class AbstractBytecodeListingTest : CodegenTestCase() {
 
         override fun visitAnnotation(desc: String, visible: Boolean): AnnotationVisitor? {
             val name = Type.getType(desc).className
-            classAnnotations.add("@$name ")
+            classAnnotations.add("@$name")
             return super.visitAnnotation(desc, visible)
         }
 

compiler/tests/org/jetbrains/kotlin/codegen/InlineTestUtil.kt

@@ -171,7 +171,7 @@ object InlineTestUtil {
     }
 
     private fun isClassOrPackagePartKind(header: KotlinClassHeader): Boolean {
-        return (header.kind == KotlinClassHeader.Kind.CLASS && !header.isLocalClass) || header.isInterfaceDefaultImpls
+        return header.kind == KotlinClassHeader.Kind.CLASS && !header.isLocalClass
     }
 
     private fun getClassHeader(file: OutputFile): KotlinClassHeader {