Changed how posts are marked ephemeral

web/react/stores/post_store.jsx

@@ -342,8 +342,7 @@ class PostStoreClass extends EventEmitter {
             // make sure to copy the post so that component state changes work properly
             postList.posts[post.id] = Object.assign({}, post, {
                 state: Constants.POST_DELETED,
-                filenames: [],
-                ephemeral: true
+                filenames: []
             });
         }
     }