C2 VTS: Disable multi-frame tests in audio decoder am: 04c36855 am: 2e9857a3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/24775010



Change-Id: I9f90a86e02d614c90816f136865cddeaeab7f34b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>