get rid of unused functions, and variables

lua/conf/plugins/cmp.lua

@@ -1,10 +1,3 @@
-local function has_words_before()
-  unpack = unpack or table.unpack
-  local line, col = unpack(vim.api.nvim_win_get_cursor(0))
-  return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)
-    [1]:sub(col, col):match("%s") == nil
-end
-
 return { 'hrsh7th/nvim-cmp',
   requires = {
     'nvim-treesitter/nvim-treesitter',
@@ -90,7 +83,6 @@ return { 'hrsh7th/nvim-cmp',
           local menu_icon = {
             nvim_lsp = 'λ',
             nvim_lua = 'v',
-            calc = '+',
             luasnip = '%',
             buffer = '@',
             path = '#'