Revert "Add javadoc about lifecycles for xml defined Controllers."

Revert submission 13804074-controller-lifecycle

Reason for revert: ag/182373167, see a crash related to this new cl.
Reverted Changes:
I39ac69f24:Use androidx LifecycleObserver for wiring up contr...
I086620e31:Add javadoc about lifecycles for xml defined Contr...

Change-Id: I6b539199de52432bb367303f5f78363886a05512
1 file changed