remove flawed and obsolete automake version check in admin/cvs.sh
    
    It turns out that the problem was that Rawhide has automake 1.11.5, which
    happens to match "automake*1.5*", which is checked before the valid versions.
    
    So we just remove the flawed version checks entirely. Nobody is using an
    automake older than 1.6.1 anymore anyway.