Remove linux_arm_compile as 100% experiment.
Remove linux_arm_compile as 100% experiment.

BUG=384104
TBR=phajdan.jr@chromium.org

Review URL: https://codereview.chromium.org/1313513005

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#346232}

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