remove comment

src/InputHandler.ts

@@ -580,14 +580,6 @@ export class InputHandler extends Disposable implements IInputHandler {
     this._terminal.setgLevel(0);
   }
 
-  /**
-   * Cursor movements.
-   *
-   * TODO:
-   * - create Cursor class living on Buffer
-   * - move private cursor methods to Cursor class as API
-   */
-
   /**
    * Restrict cursor to viewport size / scroll margin (origin mode).
    */