python311.pkgs.breathe: drop already upstreamed patch

Without the change build fails at patch apply phase:

       > applying patch /nix/store/dmbcdrjm61q5i0mndanj4zn8fkw7g5nj-de3504c81c7cefc87c8229743f93232ca00a685d.patch
       > patching file tests/test_renderer.py
       > Reversed (or previously applied) patch detected!  Assume -R? [n]
       > Apply anyway? [n]
       > Skipping patch.
       > 2 out of 2 hunks ignored -- saving rejects to file tests/test_renderer.py.rej

pkgs/development/python-modules/breathe/default.nix

@@ -2,7 +2,6 @@
 , buildPythonPackage
 , docutils
 , fetchFromGitHub
-, fetchpatch
 , pytestCheckHook
 , pythonOlder
 , sphinx
@@ -22,13 +21,6 @@ buildPythonPackage rec {
     hash = "sha256-LJXvtScyWRL8zfj877bJ4xuIbLV9IN3Sn9KPUTLMjMI=";
   };
 
-  patches = [
-    (fetchpatch {
-      url = "https://github.com/breathe-doc/breathe/commit/de3504c81c7cefc87c8229743f93232ca00a685d.patch";
-      hash = "sha256-UGld5j0F/hnTuS7KUFvgQL52xCUdaJ3/NeuEuHhpCxI=";
-    })
-  ];
-
   propagatedBuildInputs = [
     docutils
     sphinx