Revert r19538: it created more problems than it cured and needs to be reworked.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@19550 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/CMFActivity/skins/activity/SQLDict_reserveMessageList.zsql

@@ -12,8 +12,6 @@ to_date
 limit
 group_method_id
 order_validation_text</params>
-LOCK TABLE message WRITE
-<dtml-var sql_delimiter>
 UPDATE
   message
 SET

product/CMFActivity/skins/activity/SQLQueue_reserveMessageList.zsql

@@ -11,8 +11,6 @@ class_file:
 to_date
 limit
 </params>
-LOCK TABLE message_queue WRITE
-<dtml-var sql_delimiter>
 UPDATE
   message_queue
 SET