[automerger skipped] Destroy output tracks when existing. am: 08209921 -s ours

am skip reason: Merged-In I4e83ee6d7cca38c62448ccb3019a7d2275cc664e with SHA-1 c62d6030 is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/3391044



Change-Id: I933a4d6ef92c58981da88bd4d8c80f543d8283ac
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>