nvim: Switch back to deoplete

Language client neovim actually works with deoplete as per
the documentation and not ALE.

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>

nvim/init.vim

@@ -43,8 +43,8 @@ Plug 'autozimu/LanguageClient-neovim', {
     \ 'branch': 'next',
     \ 'do': 'fish install.sh',
     \ }
-" Asynchronous Lint Engine
-Plug 'w0rp/ale'
+" For autocompletion
+Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
 
 " Initialize plugin system
 call plug#end()
@@ -183,9 +183,8 @@ let g:haskell_indent_guard = 2
 let g:haskell_indent_case_alternative = 1
 let g:cabal_indent_section = 2
 
-" Use ALE
-let g:ale_completion_enabled=1
-let g:airline#extensions#ale#enabled = 1
+" Use deoplete
+let g:deoplete#enable_at_startup = 1
 
 let g:airline#extensions#tabline#enabled = 2
 let g:airline#extensions#tabline#fnamemod = ':t'