Revert "Rebuild cyrus-sasl with XOAUTH2 support"

This reverts commit dea7abd19a.

configuration.nix

@@ -111,7 +111,6 @@ with pkgs;
     ./modules/cachix.nix
     ./overlays/emacs.nix
     ./overlays/nix-direnv.nix
-    ./overlays/cyrus-sasl.nix
   ];
 
 }

flake.lock

@@ -20,22 +20,6 @@
         "type": "github"
       }
     },
-    "cyrus-sasl-xoauth2": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1611713742,
-        "narHash": "sha256-IaH8tNUhM0lUOmFiG4G9cGzsuM9mTWfQrzoQ78MIgZ0=",
-        "owner": "robn",
-        "repo": "sasl2-oauth",
-        "rev": "4236b6fb904d836b85b55ba32128b843fd8c2362",
-        "type": "github"
-      },
-      "original": {
-        "owner": "robn",
-        "repo": "sasl2-oauth",
-        "type": "github"
-      }
-    },
     "emacs-overlay": {
       "locked": {
         "lastModified": 1635818927,
@@ -69,7 +53,6 @@
     "root": {
       "inputs": {
         "agenix": "agenix",
-        "cyrus-sasl-xoauth2": "cyrus-sasl-xoauth2",
         "emacs-overlay": "emacs-overlay",
         "nixpkgs": "nixpkgs"
       }

flake.nix

@@ -6,10 +6,6 @@
     agenix.url = "github:ryantm/agenix";
     agenix.inputs.nixpkgs.follows = "nixpkgs";
     emacs-overlay.url = "github:nix-community/emacs-overlay";
-    cyrus-sasl-xoauth2 = {
-      url = "github:robn/sasl2-oauth";
-      flake = false;
-    };
   };
 
   outputs = { self, nixpkgs, agenix, ... }@inputs:

overlays/cyrus-sasl.nix

@@ -1,24 +0,0 @@
-{ config, lib, pkgs, inputs, ... }:
-
-let
-  cyrus-sasl-xoauth2 = with pkgs;
-    stdenv.mkDerivation {
-      name = "cyrus-sasl-xoauth2";
-      src = inputs.cyrus-sasl-xoauth2;
-      nativeBuildInputs =
-        [ autoreconfHook inputs.nixpkgs.legacyPackages."${system}".cyrus_sasl ];
-    };
-
-in {
-  nixpkgs.overlays = [
-    (final: prev: {
-      cyrus_sasl = prev.cyrus_sasl.overrideAttrs (div: rec {
-        postInstall = ''
-          for lib in ${cyrus-sasl-xoauth2}/lib/sasl2/*; do
-            ln -sf $lib $out/lib/sasl2/
-          done
-        '';
-      });
-    })
-  ];
-}