remote unnecessary `.gitmodules` entries

.gitmodules

@@ -73,15 +73,3 @@
 [submodule "vim/bundle/vim-multiple-cursors"]
 	path = vim/bundle/vim-multiple-cursors
 	url = ttps://github.com/terryma/vim-multiple-cursors.git
-[submodule "vim/bundle/unite.vim"]
-	path = vim/bundle/unite.vim
-	url = https://github.com/Shougo/unite.vim.git
-[submodule "vim/bundle/vimshell.vim"]
-	path = vim/bundle/vimshell.vim
-	url = https://github.com/Shougo/vimshell.vim.git
-[submodule "vim/bundle/vimproc"]
-	path = vim/bundle/vimproc
-	url = https://github.com/Shougo/vimproc.git
-[submodule "vim/bundle/neocomplcache.vim"]
-	path = vim/bundle/neocomplcache.vim
-	url = https://github.com/Shougo/neocomplcache.vim.git