Disable workstation osbuild for now because its (inadvetantly) causing compose failures
    
    Composes have been failing on the workstation live since 2023-10-19,
    which is the same time that osbuild composes have been working.
    I think the problem is that it's using the same name in koji as pungi is
    trying to use for the direct livemedia build, which causes the task to
    fail because the release is the same and koji doesn't allow 'packages'
    to have the same name-version-release.
    
    So, lets disable for now and try and get a compose, then work out how to
    fix it. Possibly we should just use another name for osbuild version.
    
    Signed-off-by: Kevin Fenzi <kevin@scrye.com>