Delete all test isolate file now that M54 was branched.
The runtime dependencies data was successfully transitioned to GN.
Keep non-testing isolate as some projects (v8, webrtc) still need some. They
will be curated incrementally.
Ran:
$ git rm $(git ls-files -- "*.isolate" | grep -i test | grep -v testserver)
$ git ls-files -- "*.isolate" | wc -l
14
TBR=dpranke@chromium.org
BUG=
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel
Review-Url: https://codereview.chromium.org/2257893002
Cr-Commit-Position: refs/heads/master@{#415954}
143 files changed
