Revert "vim: ale: try using deoplete for completion"

This reverts commit bfad3b2a4c.
deoplete requires pynvim to be always available.
This is annoying when using virtualenvs or pynvim is not available.

vim/plugins_config.vim

@@ -85,7 +85,9 @@ augroup END
 
 let g:ale_fix_on_save = 1
 let g:ale_cursor_detail=1
-let g:ale_detail_to_floating_preview =1
+let g:ale_detail_to_floating_preview = 1
+let g:ale_completion_enabled = 1
+" let g:ale_completion_autoimport = 1
 
 let g:ale_lsp_show_message_severity = 'information'
 let g:ale_lsp_suggestions = 1
@@ -217,14 +219,14 @@ endif
 
 
 " These are the default mappings for vim-multi-cursor
-" let g:multi_cursor_start_word_key      = '<C-n>'
-" let g:multi_cursor_select_all_word_key = '<A-n>'
-" let g:multi_cursor_start_key           = 'g<C-n>'
-" let g:multi_cursor_select_all_key      = 'g<A-n>'
-" let g:multi_cursor_next_key            = '<C-n>'
-" let g:multi_cursor_prev_key            = '<C-p>'
-" let g:multi_cursor_skip_key            = '<C-x>'
-" let g:multi_cursor_quit_key            = '<Esc>'
+let g:multi_cursor_start_word_key      = '<C-n>'
+let g:multi_cursor_select_all_word_key = '<A-n>'
+let g:multi_cursor_start_key           = 'g<C-n>'
+let g:multi_cursor_select_all_key      = 'g<A-n>'
+let g:multi_cursor_next_key            = '<C-n>'
+let g:multi_cursor_prev_key            = '<C-p>'
+let g:multi_cursor_skip_key            = '<C-x>'
+let g:multi_cursor_quit_key            = '<Esc>'
 
 " indent-guides, toggle with <leader>ig
 let g:indent_guides_enable_on_vim_startup = 0

vim/plugs.vim

@@ -109,16 +109,6 @@ if isdirectory(vim_razer)
     Plug vim_razer
 endif
 
-if has('nvim')
-  Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
-else
-  Plug 'Shougo/deoplete.nvim'
-  Plug 'roxma/nvim-yarp'
-  Plug 'roxma/vim-hug-neovim-rpc'
-endif
-let g:deoplete#enable_at_startup = 1
-
-
 if g:uname ==? 'Linux'
     Plug 'https://github.com/HiPhish/info.vim'
 endif

vim/vimrc

@@ -56,7 +56,7 @@ set hlsearch "highlight search results (using *)
 set expandtab shiftwidth=4 tabstop=4 "always use spaces
 
 " Completion menu config (see :h completopt)
-set completeopt=menu,menuone,noselect,noinsert,preview
+set completeopt=menu,menuone,noselect,noinsert
 " Show completion suggestions in popups instead of preview window
 set completeopt+=popup
 
@@ -139,8 +139,3 @@ source $DOTFILES/vim/functions.vim
 if filereadable('.vimrc.local')
     source .vimrc.local
 endif
-
-" Use ALE and also some plugin 'foobar' as completion sources for all code.
-call deoplete#custom#option('sources', {
-\ '_': ['ale', 'ultisnips'],
-\})