switches to homebrew emacs

flake.lock

@@ -60,22 +60,6 @@
         "type": "github"
       }
     },
-    "emacs-overlay": {
-      "locked": {
-        "lastModified": 1644575200,
-        "narHash": "sha256-7BaSTzlAI/xndvPIieZSZOB5Nsgtrb7L5HqdGGdVbwg=",
-        "owner": "nix-community",
-        "repo": "emacs-overlay",
-        "rev": "da2f552d133497abd434006e0cae996c0a282394",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "emacs-overlay",
-        "rev": "da2f552d133497abd434006e0cae996c0a282394",
-        "type": "github"
-      }
-    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -221,7 +205,6 @@
     "root": {
       "inputs": {
         "agenix": "agenix",
-        "emacs-overlay": "emacs-overlay",
         "home-manager": "home-manager_2",
         "ip-whitelist": "ip-whitelist",
         "nix-darwin": "nix-darwin",