[ez][CI] Reuse old whl: remove old zip/whl (#154770)

Forgot that unzip doesn't get rid of the zip so the old one is still there

Unrelated: figure out how to update the git version
Pull Request resolved: https://github.com/pytorch/pytorch/pull/154770
Approved by: https://github.com/ZainRizvi, https://github.com/malfet

.github/actions/reuse-old-whl/reuse_old_whl.py

@@ -207,6 +207,10 @@ def unzip_artifact_and_replace_files() -> None:
         subprocess.check_output(
             ["unzip", "-o", new_path, "-d", f"artifacts/dist/{new_path.stem}"],
         )
+
+        # Remove the old wheel (which is now a zip file)
+        os.remove(new_path)
+
         # Copy python files into the artifact
         subprocess.check_output(
             ["rsync", "-avz", "torch", f"artifacts/dist/{new_path.stem}"],