Revert "Oil"

This reverts commit bcfdbda46a.

init.lua

@@ -655,6 +655,3 @@ require('lspconfig').rust_analyzer.setup {
   }
 }
 
-
-require("oil").setup()
-vim.keymap.set("n", "-", "<CMD>Oil<CR>", { desc = "Open parent directory" })

lua/custom/plugins/oil.lua

@@ -1,6 +0,0 @@
-return {
-  'stevearc/oil.nvim',
-  opts = {},
-  -- Optional dependencies
-  dependencies = { "nvim-tree/nvim-web-devicons" },
-}