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/enum/enumWithEmptyName.txt

@@ -2,6 +2,7 @@ package
 
 internal final enum class <no name provided> : kotlin.Enum<<no name provided>> {
     private constructor <no name provided>()
+    protected final override /*1*/ /*fake_override*/ fun clone(): kotlin.Any
     public final override /*1*/ /*fake_override*/ fun compareTo(/*0*/ other: <no name provided>): 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