tree 9f93020a889d7399b762c03aadd2c73a105a8f28
parent 6877cc6dcd09d86eb2f321cf2064d8845f3934b9
author Wan-Teh Chang <wtc@google.com> 1573588427 -0800
committer Wan-Teh Chang <wtc@google.com> 1573594650 +0000

Have metadata remove/free functions return void.

Only the unit tests were checking the return values of these functions.
The callers in actual code ignored their return values. So they can
just return void.

BUG=aomedia:2507

Change-Id: I9cdc3db52cae673fc6be440b912edc4de7d6aca0