Cannot delete package signing service

[daviddavis]

Version
latest

Describe the bug
Attempting to remove an RPM package signing service fails with:

$ pulpcore-manager remove-signing-service dirk_gently_rpm_signing_service
CommandError: Signing service 'dirk_gently_rpm_signing_service' of class 'core:AsciiArmoredDetachedSigningService' does not exists. 

To Reproduce

pulpcore-manager add-signing-service \
       "dirk_gently_rpm_signing_service" \
       "/holistic_signing_script.py" \
       "${KEYID}" \
       --class "rpm:RpmPackageSigningService"
pulpcore-manager remove-signing-service dirk_gently_rpm_signing_service

Expected behavior
Delete is successful.

Additional context

[mdellweg]

Just looking at your comments here, it looks like remove-signing-service never got updated when add-signing-service was blessed with the --class argument.