removed unused rollback_by_tag_conf.pxt conf
rhn-snapshot-tag-details is unused

after rollback_by_tag_conf.pxt removal
removed unused unservable_packages.pxt page
rhn-snapshot-details is unused

after unservable_packages.pxt removal
{group,channel,config_channel,package}_diffs are unused

after snapshot_details removal
provisioning_systems_in_set_with_tag is unused

after rollback_by_tag_conf.pxt removal
snapshot_unservable_package_list is unused

after unservable_packages.pxt removal
rollback_to_snapshot is unused

after ssm_rollback_by_tag_action_cb removal
cancel_pending_for_system is unused

after rollback_to_snapshot removal
snapshot_channel_list is unused

after rollback_to_snapshot removal
groups_a_system_is_in_unsafe is unused

after rollback_to_snapshot removal
remove_servers_from_groups is unused

after rollback_to_snapshot removal
snapshot_pkg_delta is unused

after rollback_to_snapshot removal
schedule_package_sync is unused

after rollback_to_snapshot removal
snapshot_config_channel_list is unused

after rollback_to_snapshot removal
snapshot_configfiles_list is unused

after rollback_to_snapshot removal
schedule_config_action is unused

after rollback_to_snapshot removal
system_snapshot_package_list is unused

after snapshot_pkg_delta removal
datasource_result_into_manifest is unused

after snapshot_pkg_delta removal
RHN::Manifest is unused

after snapshot_pkg_delta removal