[nvim] Switches to fzf for the buffer finder, removes snacks config

home-manager/features/neovim/config/lua/plugins/snacks.lua

@@ -1,13 +0,0 @@
-return {
-  "folke/snacks.nvim",
-  keys = {
-    {
-      "<leader><space>",
-      function()
-        Snacks.picker.buffers()
-      end,
-      desc = "Buffers",
-    },
-    { "<leader><comma>", false },
-  },
-}