This changes removes the support for the "release" parameter in rpkg, initially added by https://pagure.io/rpkg/pull-request/55.

Specifying the --release parameter to set the release value dynamically turned out to be trickier than initially thought. Instead, the osbs-client and atomic-reactor projects are taking a different approach. The release value will be automatically incremented based on previous koji build if a "Release" label is not found in Dockerfile. This has been proven as a better approach to dynamic release numbers. Although leaving the release parameter support in rpkg is not harmful (as osbs-client and atomic-reactor will simply ignore it) it should be removed to avoid confusion.

Signed-off-by: Luiz Carvalho lucarval@redhat.com