[dart/fuzzer] avoid timeouts
[dart/fuzzer] avoid timeouts

Rationale:
Based on monitoring several runs, AOT on SIMARM(64)
simply takes too much time, resulting in sessions
that only have timeouts. Until we fix the runtime,
this CL disables these runs just to avoid wasting
cluster cycles.
Change-Id: I626ab07c64bd097dc8d654dbfc6a8030bc7803d1
Reviewed-on: https://dart-review.googlesource.com/c/78181
Reviewed-by: Alexander Thomas <29642742b6693024c89de8232f2e2542cf7eedf7@google.com>
Commit-Queue: Aart Bik <293afa0533434225484ba3f9bf2859340baba6ea@google.com>

dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dart-lang/sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-lang/sdk,dartino/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk