remove deleted comment event from the timeline

app/modules/user-timeline/user-timeline/user-timeline.service.coffee

@@ -48,6 +48,9 @@ class UserTimelineService extends taiga.Service
 
                     return false
 
+            if timeline.get("data").get("comment_deleted")
+                return false
+
         if !@._isValidEvent(timeline.get('event_type'))
             return false
 

app/modules/user-timeline/user-timeline/user-timeline.service.spec.coffee

@@ -112,6 +112,16 @@ describe "tgUserTimelineService", ->
                         "name": "xx"
                     }
                 }
+            },
+            { # invalid item
+                event_type: "xx.us.change",
+                data: {
+                    comment_deleted: true,
+                    values_diff: {
+                        "status": "xx",
+                        "subject": "xx"
+                    }
+                }
             }
         ]