Remove deprecated methods.

The following deprecated methods have been removed:

- Security::cipher()
- Security::inactiveMins()

- BehaviorCollection::attach()
- BehaviorCollection::detach()
- ObjectCollection::attached()

- AclComponent::grant()
- AclComponent::revoke()

As they have long been deprecated in 2.x and should have been upgraded to 2.3/2.4 code respectively.