Don't render contents of enum entry classes in .txt tests, regenerate tests

They are irrelevant because cannot be accessed from the outside anyway

compiler/testData/diagnostics/tests/callableReference/function/abstractClassConstructors.txt

@@ -24,6 +24,7 @@ kotlin.annotation.annotation() internal final class C : kotlin.Annotation {
 
 internal final enum class D : kotlin.Enum<D> {
     private constructor D()
+    protected final override /*1*/ /*fake_override*/ fun clone(): kotlin.Any
     public final override /*1*/ /*fake_override*/ fun compareTo(/*0*/ other: D): kotlin.Int
     public final override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public final override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int