Swap out nvim-tree with oil.nvim

Better plugin for what I want instead of trying to kludge a tree sidebar
plugin into a vinegar-style plugin.

lua/plugins/nvim-tree.lua

@@ -1,30 +0,0 @@
-require('nvim-tree').setup({
-  hijack_netrw = true,
-  hijack_directories = {
-    enable = true,
-    auto_open = true,
-  },
-  view = {
-    mappings = {
-      list = {
-        { key = "<CR>", action = "edit_in_place" },
-        { key = "<C-i>", action = "toggle_file_info" },
-      }
-    }
-  },
-  remove_keymaps = {
-    '<C-k>'
-  },
-})
-
-local function toggle_replace()
-  local view = require("nvim-tree.view")
-  if view.is_visible() then
-      view.close()
-  else
-    require("nvim-tree").open_replacing_current_buffer()
-  end
-end
-
-vim.keymap.set('n', '-', function() toggle_replace() end, { noremap = true, silent = true })
-vim.keymap.set('n', '<leader>n', [[<Cmd>NvimTreeToggle<CR>]], { noremap = true, silent = true, desc = "Toggle [N]vim Tree" })

lua/plugins/oil-nvim.lua

@@ -0,0 +1,3 @@
+require("oil").setup()
+
+vim.keymap.set("n", "-", require("oil").open, { desc = "Open parent directory" })