4ba6be8d43
Reason for revert:
libfuzzer has now been moved out of LLVM into third_party/libFuzzer, which we use from https://codereview.webrtc.org/1857673002/
Original issue's description:
> CQ: Remove libfuzzer trybot from default trybot set.
>
> TBR=pbos@webrtc.org
> BUG=chromium:591955
>
> Committed: 2bb7080047
TBR=pbos@webrtc.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:591955
NOTRY=True
Review URL: https://codereview.webrtc.org/1855173002
Cr-Commit-Position: refs/heads/master@{#12214}