When unreblog arrives over streaming API, just delete in UI (#5439)

app/javascript/mastodon/reducers/timelines.js

@@ -75,15 +75,9 @@ const updateTimeline = (state, timeline, status, references) => {
   }));
 };
 
-const deleteStatus = (state, id, accountId, references, reblogOf) => {
+const deleteStatus = (state, id, accountId, references) => {
   state.keySeq().forEach(timeline => {
-    state = state.updateIn([timeline, 'items'], list => {
+    state = state.updateIn([timeline, 'items'], list => list.filterNot(item => item === id));
-      if (reblogOf && !list.includes(reblogOf)) {
-        return list.map(item => item === id ? reblogOf : item);
-      } else {
-        return list.filterNot(item => item === id);
-      }
-    });
   });
 
   // Remove reblogs of deleted status