ci: remove redundant superman tests
ci: remove redundant superman tests

- we already run these tests on batman
- the tests are destructive and not good for acceptance envs
- makes releasing take longer

[#170637852](https://www.pivotaltracker.com/story/show/170637852)

Co-authored-by: Amelia Downs <3da6d4986e923696b3a0bfb6f5a9291799608f85@pivotal.io>

cloudfoundry-incubator/cf-routing-release,cloudfoundry-incubator/cf-routing-release,cloudfoundry-incubator/cf-routing-release