Revert "crash-reporter: Attach Chrome logs to crash reports."

I'm reverting this until I get a privacy review.

BUG=chromium:405732
TEST=none

Change-Id: Ib3af4752533f76c340d9b853be985bfc774104da
Reviewed-on: https://chromium-review.googlesource.com/218010


Reviewed-by: Daniel Erat <derat@chromium.org>
Commit-Queue: Daniel Erat <derat@chromium.org>
Tested-by: Daniel Erat <derat@chromium.org>