Merge "Remove libstagefright_filters." am: ddd3922e36 am: 0e080bb61c am: 98b842d780

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2401972

Change-Id: I59385db235f0e3972cb50d0b2eb569e90fcaf5bf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>