neovim: remove unnecessary plugins

neovim/.config/nvim/after/plugin/oil.lua

@@ -1,15 +0,0 @@
-local oil = require("oil")
-
-oil.setup({
-  default_file_explorer = false,
-  skip_confirm_for_simple_edits = true,
-  columns = {},
-})
-
-vim.keymap.set("n", "<leader>o", function()
-  if vim.bo.filetype == "oil" then
-    oil.close()
-  else
-    oil.open()
-  end
-end)

neovim/.config/nvim/after/plugin/telescope.lua

@@ -39,18 +39,8 @@ telescope.setup({
       end,
     },
   },
-  extensions = {
-    fzf = {
-      fuzzy = true,
-      override_generic_sorter = true,
-      override_file_sorter = true,
-      case_mode = "smart_case",
-    },
-  },
 })
 
-telescope.load_extension("fzf")
-
 vim.keymap.set("n", "<leader>f", builtin.find_files)
 vim.keymap.set("n", "<leader>s", builtin.live_grep)
 vim.keymap.set("n", "<leader>p", vim.cmd.Telescope)

neovim/.config/nvim/after/plugin/undotree.lua

@@ -1,7 +0,0 @@
-vim.opt.undodir = os.getenv("HOME") .. "/.vim/undodir"
-vim.opt.undofile = true
-
-vim.keymap.set("n", "<leader>u", function()
-  vim.cmd.UndotreeToggle()
-  vim.cmd.UndotreeFocus()
-end)