Use skiplist to filter the current directory

autoload/startify.vim

@@ -204,6 +204,7 @@ function! s:show_dir(cnt) abort
   endif
   for fname in split(glob('.\=*'))
     if isdirectory(fname)
+          \ || (exists('g:startify_skiplist') && s:is_in_skiplist(resolve(fnamemodify(fname, ':p'))))
       continue
     endif
     call add(files, [getftime(fname), fname])

doc/startify.txt

@@ -140,7 +140,8 @@ Example: let g:startify_bookmarks = [ '~/.vimrc' ]
 
     let g:startify_skiplist = []
 
-A list of Vim regular expressions to filter recently used files.
+A list of Vim regular expressions to filter recently used files and files in
+the current directory.
 
 Example: let g:startify_skiplist = [
            \ 'COMMIT_EDITMSG',