Use vimproc for unite instead of neovim

The neovim functionality is still a bit buggy

.vimrc

@@ -9,6 +9,7 @@ Plug 'mhinz/vim-signify'
 Plug 'mhinz/vim-grepper'
 Plug 'sjl/gundo.vim'
 Plug 'Shougo/unite.vim'
+Plug 'Shougo/vimproc.vim', {'do' : 'make'}
 Plug 'EinfachToll/DidYouMean'
 
 Plug 'vim-scripts/dbext.vim', {'for': 'sql'}
@@ -162,8 +163,6 @@ if has('nvim')
   tnoremap <C-V><C-V> <C-V>
   tnoremap <C-V> <C-\><C-N>"+pi
 
-  nnoremap <C-P> :Unite -no-split -buffer-name=files -start-insert file_rec/neovim<cr>
-
   autocmd BufWinEnter,WinEnter term://* startinsert
 endif