remove disable-uaa-client-redirect-uri-legacy from experimental
remove disable-uaa-client-redirect-uri-legacy from experimental

- were not going to test this because it's not going GA and UAA will
  test it on their side.

[#167050998](https://www.pivotaltracker.com/story/show/167050998)

Co-authored-by: Sebastian Vidrio <68ba84219e4e2d7d15fed3ed668bd2821314e420@pivotal.io>

cloudfoundry/cf-deployment,cloudfoundry/cf-deployment