Fix most lgtm warnings

src/browser/input/MoveToCell.ts

@@ -105,11 +105,6 @@ function moveToRequestedCol(startX: number, startY: number, targetX: number, tar
   ).length, sequence(direction, applicationCursor));
 }
 
-function moveHorizontallyOnly(startX: number, startY: number, targetX: number, targetY: number, bufferService: IBufferService, applicationCursor: boolean): string {
-  const direction = horizontalDirection(startX, startY, targetX, targetY, bufferService, applicationCursor);
-  return repeat(Math.abs(startX - targetX), sequence(direction, applicationCursor));
-}
-
 /**
  * Utility functions
  */

src/common/services/CoreService.ts

@@ -5,7 +5,7 @@
 
 import { ICoreService, ILogService, IOptionsService, IBufferService } from 'common/services/Services';
 import { EventEmitter, IEvent } from 'common/EventEmitter';
-import { IDecPrivateModes, ICharset } from 'common/Types';
+import { IDecPrivateModes } from 'common/Types';
 import { clone } from 'common/Clone';
 
 const DEFAULT_DEC_PRIVATE_MODES: IDecPrivateModes = Object.freeze({