#800 No need to track that last update has changed each time the ticket gets updated (common to all types of tickets)

git-svn-id: http://svn.code.sf.net/p/itop/code/trunk@2950 a333f486-631f-4898-b8df-5754b55c2be0

datamodels/2.x/itop-tickets/datamodel.itop-tickets.xml

@@ -113,6 +113,7 @@
           <sql>last_update</sql>
           <default_value/>
           <is_null_allowed>true</is_null_allowed>
+          <tracking_level>none</tracking_level>
         </field>
         <field id="close_date" xsi:type="AttributeDateTime">
           <sql>close_date</sql>