remove cosign gh checks due to job removal (#426)

Signed-off-by: cpanato <ctadeu@gmail.com>

github-sync/github-data/sigstore/repositories.yaml

@@ -225,9 +225,6 @@ repositories:
           - Run unit tests (ubuntu-latest)
           - Run unit tests (windows-latest)
           - Verify Docgen
-          - build (macos-latest)
-          - build (ubuntu-latest)
-          - build (windows-latest)
           - License and Vulnerability Scan / Scan dependencies for license compliance and vulnerabilities
           - license boilerplate check
           - lint