slapos_cloud: XXX stop invalidating Slave Instance

TODO: Instance on Remote Node must propagate their destruction, before being invalidated

master/bt5/slapos_cloud/WorkflowTemplateItem/portal_workflow/slapos_cloud_interaction_workflow/interaction_SlaveInstance_requestDestroy.xml

@@ -9,9 +9,7 @@
         <item>
             <key> <string>categories</string> </key>
             <value>
-              <tuple>
-                <string>after_script/portal_workflow/slapos_cloud_interaction_workflow/script_Instance_invalidate</string>
-              </tuple>
+              <tuple/>
             </value>
         </item>
         <item>