Remove the OSS UBI builds (#49118)

This commit removes the OSS UBI-based Docker images from the build as we
are not going to publish these images for the time being.

Author: jasontedor

distribution/docker/oss-ubi-docker-build-context/build.gradle

@@ -32,8 +32,6 @@ List projects = [
   'distribution:docker:docker-export',
   'distribution:docker:oss-docker-build-context',
   'distribution:docker:oss-docker-export',
-  'distribution:docker:oss-ubi-docker-build-context',
-  'distribution:docker:oss-ubi-docker-export',
   'distribution:docker:ubi-docker-build-context',
   'distribution:docker:ubi-docker-export',
   'distribution:packages:oss-deb',