public async Task <IActionResult> DeleteEmp(int id)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest("Unable to delete book"));
            }

            var book = await _repo.DeleteEmp(id);

            if (book == true)
            {
                return(Ok("Book Removed Successfully"));
            }

            return(BadRequest("Unable To Delete Book"));
        }