MB: Remove Android clang bot configurations.
MB: Remove Android clang bot configurations.

Changes to match https://chromium-review.googlesource.com/c/chromium/tools/build/+/627917

BUG=chromium:758084
NOTRY=True

Review-Url: https://codereview.webrtc.org/3004513002
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#19461}

ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc