message: Fix lint and style issues
diff: @@ -38,13 +38,12 @@ import * as sdk from '../../../index';
  import Modal from '../../../Modal';
  import {_t, _td} from '../../../languageHandler';
  import ContentMessages from '../../../ContentMessages';
  -import {Key, isOnlyCtrlOrCmdKeyEvent} from "../../../Keyboard";
  +import {Key} from "../../../Keyboard";
  import MatrixClientContext from "../../../contexts/MatrixClientContext";
  import RateLimitedFunc from '../../../ratelimitedfunc';
  import {Action} from "../../../dispatcher/actions";
  import {containsEmoji} from "../../../effects/utils";
  import {CHAT_EFFECTS} from '../../../effects';
  -import SettingsStore from "../../../settings/SettingsStore";
  import CountlyAnalytics from "../../../CountlyAnalytics";
  import {MatrixClientPeg} from "../../../MatrixClientPeg";
  import EMOJI_REGEX from 'emojibase-regex';
  @@ -152,7 +151,7 @@ export default class SendMessageComposer extends React.Component {
  event.preventDefault();
  break;
  case KeyAction.SelectPrevSendHistory:
  - case KeyAction.SelectNextSendHistory:
  + case KeyAction.SelectNextSendHistory: {
  // Try select composer history
  const selected = this.selectSendHistory(action === KeyAction.SelectPrevSendHistory);
  if (selected) {
  @@ -160,7 +159,8 @@ export default class SendMessageComposer extends React.Component {
  event.preventDefault();
  }
  break;
  - case KeyAction.EditLastMessage:
  + }
  + case KeyAction.EditPrevMessage:
  // selection must be collapsed and caret at start
  if (this._editorRef.isSelectionCollapsed() && this._editorRef.isCaretAtStart()) {
  const editEvent = findEditableEvent(this.props.room, false);
  