python313Packages.msmart-ng: drop no longer needed PEP 639 revert

At the time, setuptools did not yet implement PEP 639. This has changed
with the release of setuptools v77.0.0, which has since landed in
nixpkgs. As such, this patch is no longer needed.

Ref: 7605633c21

pkgs/development/python-modules/msmart-ng/default.nix

@@ -2,7 +2,6 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
-  fetchpatch2,
 
   # build-system
   setuptools,
@@ -28,17 +27,6 @@ buildPythonPackage rec {
     hash = "sha256-dZD93ZZiQLmWuMAR/nnYB7oGBBYr4YPEi+LdpSzweVc=";
   };
 
-  patches = [
-    (fetchpatch2 {
-      # Revert <https://github.com/mill1000/midea-msmart/pull/209> until setuptools
-      # implements support for <https://peps.python.org/pep-0639/>.
-      name = "revert-pyproject-license-declaration-pep639-syntax.patch";
-      url = "https://github.com/mill1000/midea-msmart/commit/e5d6a982135e497c251095e421d3de4686f36056.patch?full_index=1";
-      hash = "sha256-+mxmFGZd04MZY2C5eo4k1lFoXsM8XyeJNazShnjAseE=";
-      revert = true;
-    })
-  ];
-
   build-system = [
     setuptools
     setuptools-scm