CE-1875: Remove artifact expiration time override settings
Artifacts will default to expire in 30 days, as defined in https://docs.gitlab.com/ee/administration/settings/continuous_integration.html#default-artifacts-expiration
Closes CE-1875
Artifacts will default to expire in 30 days, as defined in https://docs.gitlab.com/ee/administration/settings/continuous_integration.html#default-artifacts-expiration
Closes CE-1875