Revert "buildbot: python3Packages.service-identity: 24.1.0 -> 24.2.0"

This reverts commit 7f9857f4bd.

We update the global version now instead.

pkgs/development/tools/continuous-integration/buildbot/default.nix

@@ -3,25 +3,10 @@
   newScope,
   python3,
   recurseIntoAttrs,
-  fetchFromGitHub,
 }:
 # Take packages from self first, then python.pkgs (and secondarily pkgs)
 lib.makeScope (self: newScope (self.python.pkgs // self)) (self: {
-  python = python3.override {
-    self = self.python;
-    packageOverrides = self: super: {
-      service-identity = super.service-identity.overridePythonAttrs (oldAttrs: {
-        version = "24.2.0";
-        src = fetchFromGitHub {
-          owner = "pyca";
-          repo = "service-identity";
-          tag = "24.2.0";
-          hash = "sha256-onxCUWqGVeenLqB5lpUpj3jjxTM61ogXCQOGnDnClT4=";
-        };
-        checkInputs = [ super.pyopenssl ];
-      });
-    };
-  };
+  python = python3;
 
   buildbot-pkg = self.callPackage ./pkg.nix { };