f8df8ca78e
The --enable-isolate-groups flag has been turned on by-default for months now. In this CL we're going to remove the opt-out of this (which was possible by explicitly passing --no-enable-isolate-groups to the VM) TEST=Existing CI. Removes flag and simplifies runtime. Change-Id: I8706b9e30df437548a81846e75e67a658d6d49d4 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/219480 Reviewed-by: Alexander Aprelev <aam@google.com> Commit-Queue: Martin Kustermann <kustermann@google.com>