remove unused argument

sql/sql_parse.cc

@@ -4579,8 +4579,7 @@ mysql_execute_command(THD *thd)
                                   select_lex->order_list.elements,
                                   select_lex->order_list.first,
                                   unit->select_limit_cnt,
-                                  lex->duplicates, lex->ignore,
-                                  &found, &updated);
+                                  lex->ignore, &found, &updated);
     MYSQL_UPDATE_DONE(res, found, updated);
     /* mysql_update return 2 if we need to switch to multi-update */
     if (up_result != 2)

sql/sql_update.cc

@@ -279,7 +279,6 @@ static void prepare_record_for_error_message(int error, TABLE *table)
     order_num		number of elemen in ORDER BY clause
     order		ORDER BY clause list
     limit		limit clause
-    handle_duplicates	how to handle duplicates
 
   RETURN
     0  - OK
@@ -294,8 +293,8 @@ int mysql_update(THD *thd,
 		 List<Item> &values,
                  COND *conds,
                  uint order_num, ORDER *order,
-		 ha_rows limit,
-		 enum enum_duplicates handle_duplicates, bool ignore,
+                 ha_rows limit,
+                 bool ignore,
                  ha_rows *found_return, ha_rows *updated_return)
 {
   bool		using_limit= limit != HA_POS_ERROR;

sql/sql_update.h

@@ -31,8 +31,7 @@ bool check_unique_table(THD *thd, TABLE_LIST *table_list);
 int mysql_update(THD *thd,TABLE_LIST *tables,List<Item> &fields,
 		 List<Item> &values,COND *conds,
 		 uint order_num, ORDER *order, ha_rows limit,
-		 enum enum_duplicates handle_duplicates, bool ignore,
-                 ha_rows *found_return, ha_rows *updated_return);
+                 bool ignore, ha_rows *found_return, ha_rows *updated_return);
 bool mysql_multi_update(THD *thd, TABLE_LIST *table_list,
                         List<Item> *fields, List<Item> *values,
                         COND *conds, ulonglong options,