Remove completion triggers for ',' and '(' which may conflict with signature helper

modules/gdscript/language_server/lsp.hpp

@@ -330,8 +330,6 @@ struct CompletionOptions {
 		triggerCharacters.push_back("$");
 		triggerCharacters.push_back("'");
 		triggerCharacters.push_back("\"");
-		triggerCharacters.push_back("(");
-		triggerCharacters.push_back(",");
 	}
 
 	Dictionary to_json() const {