[Test] Remove vm/dart/il_round_trip_deserialization_test
This test was added a while ago during development of IL serialization
and deserialization (https://github.com/dart-lang/sdk/issues/36882),
which wasn't completed.
Since development of serialization/deserialization was put on hold,
this test was failing with a lot of flakiness, flipping between
Crash/Timeout/RuntimeError on unrelated changes (https://github.com/dart-lang/sdk/issues/43617,
https://github.com/dart-lang/sdk/issues/43359, https://github.com/dart-lang/sdk/issues/36882),
and even turning bots purple (https://ci.chromium.org/p/dart/builders/ci.sandbox/vm-kernel-precomp-nnbd-linux-debug-simarm_x64/32).
There are no signs that underlying problems with IL serialization/deserialization
are going to be addressed, but this test requires constant attention.
If implementation of https://github.com/dart-lang/sdk/issues/36882 is
ever resumed, it would be possible to resurrect this test from git history.
Closes https://github.com/dart-lang/sdk/issues/43617
Closes https://github.com/dart-lang/sdk/issues/43359
Closes https://github.com/dart-lang/sdk/issues/42441
Issue: https://github.com/dart-lang/sdk/issues/36882
Change-Id: I5a8789397efcb69ad30257077aee0a3e195c8a69
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/169940
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Tess Strickland <sstrickl@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Alexander Markov
bf968d5627