delete superflous completion setup

lua/lsp_setup.lua

@@ -29,22 +29,3 @@ require("mason-lspconfig").setup({
 	},
 })
 
-local cmp = require("cmp")
-
-cmp.setup({
-	sources = {
-		{ name = "nvim_lsp" },
-	},
-	mapping = cmp.mapping.preset.insert({
-		-- Enter key confirms completion item
-		["<CR>"] = cmp.mapping.confirm({ select = false }),
-
-		-- Ctrl + space triggers completion menu
-		["<C-Space>"] = cmp.mapping.complete(),
-	}),
-	snippet = {
-		expand = function(args)
-			require("luasnip").lsp_expand(args.body)
-		end,
-	},
-})