Give contextual feedback for manual update check instead of banner

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/components/structures/MatrixChat.tsx

@@ -173,7 +173,6 @@ interface IState {
     leftDisabled: boolean;
     middleDisabled: boolean;
     // the right panel's disabled state is tracked in its store.
-    checkingForUpdate?: string; // updateCheckStatusEnum
     // Parameters used in the registration dance with the IS
     register_client_secret?: string;
     register_session_id?: string;
@@ -226,8 +225,6 @@ export default class MatrixChat extends React.PureComponent<IProps, IState> {
             leftDisabled: false,
             middleDisabled: false,
 
-            checkingForUpdate: null,
-
             hideToSRUsers: false,
 
             syncError: null, // If the current syncing status is ERROR, the error object, otherwise null.
@@ -720,9 +717,6 @@ export default class MatrixChat extends React.PureComponent<IProps, IState> {
             case 'client_started':
                 this.onClientStarted();
                 break;
-            case 'check_updates':
-                this.setState({ checkingForUpdate: payload.value });
-                break;
             case 'send_event':
                 this.onSendEvent(payload.room_id, payload.event);
                 break;