[5.2] Remove unused import

app/Exceptions/Handler.php

@@ -7,7 +7,6 @@ use Illuminate\Auth\Access\AuthorizationException;
 use Illuminate\Database\Eloquent\ModelNotFoundException;
 use Symfony\Component\HttpKernel\Exception\HttpException;
 use Illuminate\Foundation\Validation\ValidationException;
-use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
 
 class Handler extends ExceptionHandler