Stop generating Sigstore signatures on release

Failing to complete.

.github/workflows/release-files.yml

@@ -38,11 +38,6 @@ jobs:
         run: >
             python3 -m hatchling build
 
-      - name: Generate Sigstore signatures
-        uses: sigstore/gh-action-sigstore-python@1a402ed919f6cb88b9bafb523fb65508c442514b
-        with:
-          inputs: dist/*
-
       - name: Check distribution files
         run: >
             twine check dist/*.{tar.gz,whl}
@@ -57,9 +52,5 @@ jobs:
         env:
           GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
 
-      - name: Remove Sigstore files
-        run: >
-            rm -f dist/*.{crt,sig,sigstore}
-
       - name: Publish distribution files to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1