Reason for revert: Reverting since the memcheck bot still fails. Original issue's description: > Revert opus memcheck suppression > > BUG=https://bugs.chromium.org/p/webrtc/issues/detail?id=5651 > > Committed: https://crrev.com/f62d107aa7ad6fcf2bacec3c6eb4a16469ed2287 > Cr-Commit-Position: refs/heads/master@{#12012} TBR=flim@webrtc.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=https://bugs.chromium.org/p/webrtc/issues/detail?id=5651 Review URL: https://codereview.webrtc.org/1807673004 Cr-Commit-Position: refs/heads/master@{#12017}