Drop config that already has sane defaults

Neovim has some pretty great sane defaults, so no reason to keep stuff
around that's backfilling vim's lack of sane defaults.

.gitignore

@@ -1,3 +1 @@
-vim/.local/share/vim/swap/
-vim/.local/share/vim/undo/
 vim/.vim/pack/plugins/start/

vim/.vimrc

@@ -11,8 +11,6 @@ set hid
 set hls ic is
 set nu rnu
 
-set directory=~/.local/share/vim/swap,/tmp
-set undodir=~/.local/share/vim/undo,/tmp
 set undofile
 
 autocmd FileType php,python setl sts=4 sw=4 ts=4