redo oil config slightly

lua/plugins/oil.lua

@@ -1,12 +1,11 @@
 return {
   'stevearc/oil.nvim',
+  lazy = false,
   dependencies = { 'nvim-tree/nvim-web-devicons' },
   -- dependencies = { { "echasnovski/mini.icons", opts = {} } },
-  config = function()
-    require('oil').setup({})
-    local u = require('utils')
-    local map = u.set_keymap
+  init = function()
+    local map = require('utils').set_keymap
+
     map('n', '-', '<CMD>Oil<CR>', { desc = 'Open parent directory' })
   end,
-  lazy = false,
 }