[tracing] Remove chrome_causes_per_scroll table

It has been superseded by chrome_scroll_jank_v3_causes_per_scroll, which
lives in the Perfetto repository.

PERFETTO_TESTS=`autoninja -C out/Default perfetto_diff_tests && out/Default/bin/run_perfetto_diff_tests`

Context: https://github.com/google/perfetto/issues/1828
Change-Id: I9217a07fb5ecea62ca46d3227799bcea18abb75a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6643098
Commit-Queue: Victor Vianna <victorvianna@google.com>
Commit-Queue: Petr Cermak <petrcermak@chromium.org>
Auto-Submit: Petr Cermak <petrcermak@chromium.org>
Reviewed-by: Victor Vianna <victorvianna@google.com>
Cr-Commit-Position: refs/heads/main@{#1473486}