remove dead code

nvim.lua/.config/nvim/lua/completion.lua

@@ -1,53 +0,0 @@
--- setup completion menu
-vim.cmd([[
-set completeopt=menu,menuone,noselect
-]])
-
--- setup cmp proper: pretty much default config
-local cmp = require'cmp'
-
-cmp.setup({
-    window = {
-        completion = cmp.config.window.bordered(winhighlight),
-        documentation = cmp.config.window.bordered(winhighlight),
-    },
-    snippet = {
-        expand = function(args)
-            require'snippy'.expand_snippet(args.body)
-        end,
-    },
-
-    mapping = cmp.mapping.preset.insert({
-        ['<C-b>'] = cmp.mapping.scroll_docs(-4),
-        ['<C-f>'] = cmp.mapping.scroll_docs(4),
-        ['<C-Space>'] = cmp.mapping.complete(),
-        ['<C-e>'] = cmp.mapping.abort(),
-        ['<CR>'] = cmp.mapping.confirm({
-            behavior = cmp.ConfirmBehavior.Insert,
-            select = false,
-        })
-    }),
-
-    sources = cmp.config.sources({
-        { name = 'nvim_lsp' },
-        { name = 'snippy' }, -- For snippy users.
-        { name = 'buffer' },
-        { name = 'path' },
-        { name = 'nvim_lua' },
-    }),
-
-    formatting = {
-        format = function(entry, vim_item)
-            vim_item.kind = string.format('%s', vim_item.kind)
-            vim_item.menu = ({
-                nvim_lsp = '[LSP]',
-                buffer = '[B]',
-                path = '[F]',
-                snippy = '[S]',
-                nvim_lua = '[vim]',
-            })[entry.source.name]
-
-            return vim_item
-        end,
-    }
-})