Revert "remove nobuflisted"

This reverts commit 4cf9947345a00151d8c0d429e4bd6bcacfd84f1d.

plugin/startify.vim

@@ -26,7 +26,7 @@ command! -nargs=? -bar -complete=customlist,startify#get_session_names SLoad cal
 " Function: s:start {{{1
 function! s:start() abort
   setfiletype startify
-  setlocal nonumber buftype=nofile
+  setlocal nonumber nobuflisted buftype=nofile
   if v:version >= 703
     setlocal norelativenumber
   endif