apparmor was allways in kernel and allways enabled as default security option.
On FrOScon we had questions about restricting userspace applications on network stack.
That would be only possible with apparmor-next, which was only available on opensuse and ubuntu.
So i added apparmor-next to our kernel, to make such users happy, who needs that functionality.
If you have no interest in apparmor, easy apt purge apparmor.