spec: remove unnecessary bind-pkcs11 dependency
    
    The bind-pkcs11 dependency was originally introduced in Fedora
    specfile in 2014 to help with ipa-server-upgrade. This was a
    temporary workaround. Since Fedora life cycle is 13 months and
    this change happened more than two years ago, it is safe to
    remove the workaround.
    
    bind-dyndb-ldap does not actually depend on bind-pkcs11, although it
    is a dependency that is enforced by freeipa.
    
    Reviewed-By: Martin Basti <mbasti@redhat.com>