Animation scene writer NotUsed

Change-Id: I192f986e2fa9820d44edf80d519557aa4e118ca3
CTH warnings

Change-Id: I0cebdc4264b82a7fd2419b500609bcf7f10b3aea
Merge topic 'fix-warnings-v4' into next

cfc9ca2 CTH warnings
e9d7704 Animation scene writer NotUsed