feat: lazyrc files are now a lazy.nvim feature

lua/lazyvim/plugins/extras/lazyrc.lua

@@ -1,38 +0,0 @@
---[[
-Enable project-specific plugin specs.
-
-File .lazy.lua:
-  is read when present in the current working directory
-  should return a plugin spec
-  has to be manually trusted for each instance of the file
-
-This extra should be the last plugin spec added to lazy.nvim
-
-See:
-  :h 'exrc'
-  :h :trust
---]]
-local filepath = vim.fn.fnamemodify(".lazy.lua", ":p")
-local file = vim.secure.read(filepath)
-if not file then
-  return {}
-end
-
-vim.api.nvim_create_autocmd("User", {
-  pattern = "VeryLazy",
-  once = true,
-  callback = function()
-    local Config = require("lazy.core.config")
-    local lazyrc_idx = LazyVim.plugin.extra_idx("lazyrc")
-
-    if lazyrc_idx and lazyrc_idx ~= #Config.spec.modules then
-      LazyVim.warn({
-        "The `lazyrc` extra must be the last plugin spec added to **lazy.nvim**. ",
-        "",
-        "Add `{ import = 'lazyvim.plugins.extras.lazyrc' }` to file `config.lazy`. ",
-        "Do not use the `LazyExtras` command. ",
-      }, { title = "LazyVim", once = true })
-    end
-  end,
-})
-return loadstring(file)()