[class fields] Remove a bit of dead code leftover from cleanup

src/parsing/parser.h

Index: src/parsing/parser.h
diff --git a/src/parsing/parser.h b/src/parsing/parser.h
index 6c77856303e53b3e38561d8ddf8f15cabfdc6615..45ef959ed44644d38db9b75ae6a459bc676f51b9 100644
--- a/src/parsing/parser.h
+++ b/src/parsing/parser.h
@@ -593,7 +593,6 @@ class V8_EXPORT_PRIVATE Parser : public NON_EXPORTED_BASE(ParserBase<Parser>) {
                          int pos);
   Expression* SpreadCallNew(Expression* function, ZoneList<Expression*>* args,
                             int pos);
-  Expression* CallClassFieldInitializer(Scope* scope, Expression* this_expr);
   Expression* RewriteSuperCall(Expression* call_expression);
 
   void SetLanguageMode(Scope* scope, LanguageMode mode);