diff --git a/patches/338637.patch b/patches/338637.patch
deleted file mode 100644
index bba6db90..00000000
--- a/patches/338637.patch
+++ /dev/null
@@ -1,18 +0,0 @@
-diff --git a/pkgs/development/python-modules/xmlschema/default.nix b/pkgs/development/python-modules/xmlschema/default.nix
-index 927296f072f7962..efb003146714648 100644
---- a/pkgs/development/python-modules/xmlschema/default.nix
-+++ b/pkgs/development/python-modules/xmlschema/default.nix
-@@ -35,10 +35,9 @@ buildPythonPackage rec {
-   ];
- 
-   disabledTests = [
--    # -file://///filer01/MY_HOME/dev/XMLSCHEMA/test.xsd
--    # +file:////filer01/MY_HOME/dev/XMLSCHEMA/test.xsd
--    "test_normalize_url_slashes"
--    "test_normalize_url_with_base_unc_path"
-+    # Incorrect error message in pickling test for Python 3.12 in Debian
-+    # https://github.com/sissaschool/xmlschema/issues/412
-+    "test_pickling_subclassed_schema__issue_263"
-   ];
- 
-   pythonImportsCheck = [ "xmlschema" ];