Removed redundant migration query.

modules/Migration/schema/640_to_650.php

@@ -31,9 +31,6 @@ do {
 	
 } while ($portalinfo_hasmore);
 
-$updateQuery = "UPDATE vtiger_portalinfo SET user_password=MD5(user_password),cryptmode='MD5' WHERE cryptmode is null";
-$adb->pquery($updateQuery, array());
-
 //Change column type of inventory line-item comment.
 $adb->pquery("ALTER TABLE vtiger_inventoryproductrel MODIFY COLUMN comment TEXT", array());