Remove vim stuff from .gitignore

If this affects you put this in your vimrc:

set backupdir=~/.cache
set directory=~/.cache

.gitignore

@@ -4,12 +4,10 @@ Makefile
 cmake_install.cmake
 install_manifest.txt
 .clang_complete
-*.swp
 *.o
 *.a
 bin/
 test/
 build/
-.lvimrc
 wayland-*-protocol.*
 wlr-example.ini