vim: remove old cruft

vimrc

@@ -36,8 +36,6 @@ Plug 'digitaltoad/vim-jade'
 Plug 'ledger/vim-ledger'
 
 Plug 'dag/vim2hs'
-Plug 'eagletmt/ghcmod-vim'
-Plug 'eagletmt/neco-ghc'
 
 " clojure
 Plug 'tpope/vim-leiningen'
@@ -51,11 +49,9 @@ Plug 'Blackrush/vim-gocode'
 Plug 'zah/nimrod.vim'
 
 Plug 'wting/rust.vim'
-Plug 'racer-rust/vim-racer', { 'for': 'rust' }
 Plug 'cespare/vim-toml'
 
 Plug 'derekwyatt/vim-scala'
-" Plug 'ensime/ensime-vim'
 
 Plug 'dogrover/vim-pentadactyl'
 Plug 'superbrothers/vim-vimperator'
@@ -63,11 +59,9 @@ Plug 'superbrothers/vim-vimperator'
 Plug 'idris-hackers/idris-vim'
 
 Plug 'tpope/vim-fugitive' " git integration
-Plug 'jreybert/vimagit'
 Plug 'airblade/vim-gitgutter'
 
 Plug 'lervag/vimtex'
-" Plug 'ludovicchabant/vim-gutentags'
 Plug 'kana/vim-textobj-user'
 Plug 'kana/vim-textobj-indent'
 
@@ -174,10 +168,6 @@ au BufNewFile,BufRead *.smt2 setl ft=smt
 au BufReadCmd *.epub call zip#Browse(expand("<amatch>"))
 au BufReadCmd *.FCStd call zip#Browse(expand("<amatch>"))
 
-au FileType scala nnoremap <silent> <c-]> :EnDeclaration<cr>
-
-au syntax haskell setl omnifunc=necoghc#omnifunc
-let g:necoghc_enable_detailed_browse=1
 let g:haskell_conceal              = 0
 
 call tcomment#type#Define('nix', '# %s')
@@ -201,21 +191,6 @@ lua <<EOF
     treesitter = {},
     lsp = {
       on_attach = function(client, bufnr)
-        -- See https://github.com/neovim/nvim-lspconfig#keybindings-and-completion
-        -- for detailed examples of what you may want to do here.
-        --
-        -- Mapping a key (typically K) to `vim.lsp.buf.hover()`
-        -- is highly recommended for Lean, since the hover LSP command
-        -- is where you'll see the current goal state.
-        --
-        -- You may furthermore want to add an `autocmd` to run it on
-        -- `CursorHoldI`, which will show the goal state any time the
-        -- cursor is unmoved in insert mode.
-        --
-        -- In the future, this plugin may offer a recommended "complete
-        -- setup" for easy enabling of the above.
-        local function buf_set_keymap(...) vim.api.nvim_buf_set_keymap(bufnr, ...) end
-        local function buf_set_option(...) vim.api.nvim_buf_set_option(bufnr, ...) end
 	vim.api.nvim_exec([[
 	  augroup lsp_document_highlight
 	    autocmd!
@@ -318,21 +293,7 @@ nnoremap <space>f <cmd>lua vim.lsp.buf.formatting()<CR>
 
 endif
 
-let g:gutentags_cache_dir="~/.config/nvim/gutentags"
-
 let g:tex_flavor = 'latex'
 let g:vimtex_compiler_progname = 'nvr'
 let g:vimtex_indent_enabled = 0
 au syntax tex setl indentexpr= " disable vim crap: https://github.com/lervag/vimtex/issues/2007#issuecomment-808768783
-augroup my_cm_setup
-  autocmd!
-  autocmd User CmSetup call cm#register_source({
-	\ 'name' : 'vimtex',
-	\ 'priority': 8,
-	\ 'scoping': 1,
-	\ 'scopes': ['tex'],
-	\ 'abbreviation': 'tex',
-	\ 'cm_refresh_patterns': g:vimtex#re#ncm,
-	\ 'cm_refresh': {'omnifunc': 'vimtex#complete#omnifunc'},
-	\ })
-augroup END