CQ: Remove ARM64 trybots until toolchain issues are resolved.
CQ: Remove ARM64 trybots until toolchain issues are resolved.

BUG=webrtc:7024
TBR=oprypin@webrtc.org

Review-Url: https://codereview.webrtc.org/2776393005 .
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#17447}

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