customized version of https://github.com/junegunn/fzf.vim/pull/733#issuecomment-559720813

fzf-delete-buffers.vim

" deletes buffers by fzf
" ref: https://github.com/junegunn/fzf.vim/pull/733#issuecomment-559720813
function! s:list_buffers_customized()
  redir => list
  silent ls
  redir END

  let l:res = []
  let l:raw_lines = split(list, "\n")
  for l:raw_line in raw_lines
    let l:elems = split(l:raw_line)
    let l:custom_line = l:elems[0] . "\t" . substitute(l:elems[2], '"', "", "g")
    call add(l:res, l:custom_line)
  endfor
 return l:res
endfunction

function! s:delete_buffers(lines)
  execute 'bwipeout' join(map(a:lines, {_, line -> split(line)[0]}))
endfunction

command! BD call fzf#run(fzf#wrap({
  \ 'source': s:list_buffers_customized(),
  \ 'sink*': { lines -> s:delete_buffers(lines) },
  \ 'options': '--multi --reverse --bind ctrl-a:select-all+accept --prompt "delete(close) buffers> "'
\ }))