Now that we are counting deopts instead of optimizations for the
"too many deoptimizations" bailout, we can remove the OSR deopt
increment hack.

Bug: chromium:700016
Change-Id: I3edd55db986cc47add632bb5af969dcee4e7a2b5
Reviewed-on: https://chromium-review.googlesource.com/484340Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44769}