Removed comfortable-motion.vim

It's isn't worth the hacks and issues.

Ref: https://github.com/amix/vimrc/issues/470

update_plugins.py

@@ -55,7 +55,6 @@ vim-abolish https://github.com/tpope/tpope-vim-abolish
 mru.vim https://github.com/vim-scripts/mru.vim
 rust.vim https://github.com/rust-lang/rust.vim
 vim-markdown https://github.com/plasticboy/vim-markdown
-comfortable-motion.vim https://github.com/yuttie/comfortable-motion.vim
 gist-vim https://github.com/mattn/gist-vim
 vim-ruby https://github.com/vim-ruby/vim-ruby
 typescript-vim https://github.com/leafgarland/typescript-vim