message: Remove redundant super class EventEmitter for FlairStore
  , which seemingly is not being used.
diff: @@ -14,7 +14,6 @@ See the License for the specific language governing permissions and
  limitations under the License.
  */
  -import EventEmitter from 'events';
  import Promise from 'bluebird';
  const BULK_REQUEST_DEBOUNCE_MS = 200;
  @@ -29,9 +28,8 @@ const GROUP_PROFILES_CACHE_BUST_MS = 1800000; // 30 mins
  /**
  * Stores data used by <Flair/>
  */
  -class FlairStore extends EventEmitter {
  +class FlairStore {
  constructor(matrixClient) {
  - super();
  this._matrixClient = matrixClient;
  this._userGroups = {
  // $userId: ['+group1:domain', '+group2:domain', ...]
  