Remove unused parameter

unused since 39bd3fd1db

Discussion: https://www.postgresql.org/message-id/flat/511bb100-f829-ba21-2f10-9f952ec06ead%402ndquadrant.com

src/pl/plpgsql/src/pl_gram.y

@@ -107,7 +107,7 @@ static	void			 check_labels(const char *start_label,
 									  const char *end_label,
 									  int end_location);
 static	PLpgSQL_expr	*read_cursor_args(PLpgSQL_var *cursor,
-										  int until, const char *expected);
+										  int until);
 static	List			*read_raise_options(void);
 static	void			check_raise_parameters(PLpgSQL_stmt_raise *stmt);
 
@@ -1414,8 +1414,7 @@ for_control		: for_variable K_IN
 
 							/* collect cursor's parameters if any */
 							new->argquery = read_cursor_args(cursor,
-															 K_LOOP,
+															 K_LOOP);
-															 "LOOP");
 
 							/* create loop's private RECORD variable */
 							new->var = (PLpgSQL_variable *)
@@ -2129,7 +2128,7 @@ stmt_open		: K_OPEN cursor_variable
 						else
 						{
 							/* predefined cursor query, so read args */
-							new->argquery = read_cursor_args($2, ';', ";");
+							new->argquery = read_cursor_args($2, ';');
 						}
 
 						$$ = (PLpgSQL_stmt *)new;
@@ -3773,7 +3772,7 @@ check_labels(const char *start_label, const char *end_label, int end_location)
  * parens).
  */
 static PLpgSQL_expr *
-read_cursor_args(PLpgSQL_var *cursor, int until, const char *expected)
+read_cursor_args(PLpgSQL_var *cursor, int until)
 {
 	PLpgSQL_expr *expr;
 	PLpgSQL_row *row;