Revert "patch windows for 3.15 startup"

This reverts commit 711e1ff.

Author: jjhelmus

cpython-windows/build.py

@@ -311,19 +311,6 @@ def static_replace_in_file(p: pathlib.Path, search, replace):
         fh.write(data)
 
 
-def apply_source_patch(cpython_source_path: pathlib.Path, patch_path: pathlib.Path):
-    subprocess.run(
-        [
-            "git.exe",
-            "-C",
-            str(cpython_source_path),
-            "apply",
-            str(patch_path),
-        ],
-        check=True,
-    )
-
-
 OPENSSL_PROPS_REMOVE_RULES_LEGACY = b"""
   <ItemGroup>
     <_SSLDLL Include="$(opensslOutDir)\libcrypto$(_DLLSuffix).dll" />
@@ -1505,12 +1492,6 @@ def build_cpython(
         cpython_source_path = td / ("Python-%s" % python_version)
         pcbuild_path = cpython_source_path / "PCbuild"
 
-        if python_version.startswith("3.15."):
-            apply_source_patch(
-                cpython_source_path,
-                SUPPORT / "patch-site-reentrant-startup-files-3.15.patch",
-            )
-
         out_dir = td / "out"
 
         build_dir = out_dir / "python" / "build"