Remove fedora/30 from supported list

We rely on packagecloud to distribute RPMs. As of now packagecloud does
not support fedora/30, especially the version that we are running. We
need to wait for packagecloud to support this OS since before adding it
back to the list.
5 jobs for docs/remove-fedora-30 in 4 minutes and 34 seconds (queued for 1 second)
Status Job ID Name Coverage
  Prebuild
passed #241767480
check feature flags docs

00:01:20

manual #241767463
allowed to fail manual
review-docs-deploy
 
  Test
passed #241767483
docs lint

00:00:54

passed #241767482
allowed to fail
license_management

00:03:14

 
  Cleanup
manual #241767486
allowed to fail manual
review-docs-cleanup