pw_presubmit: Skip lines with > in commit message check
pw_presubmit: Skip lines with > in commit message check

Reverts made in Gerrit quote the original commit message with ">". Don't
check line length of lines ">" in them.

Change-Id: I349939e54d12abad80f4f61e9403aef29326c1db
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/30603
Pigweed-Auto-Submit: Wyatt Hepler <cca3bedb37979eacd157a9bceb473582df8aea1e@google.com>
Reviewed-by: Keir Mierle <69344103cc60b36d6e1fbdc31ce6504b2286c646@google.com>
Reviewed-by: Michael Spang <e1fb1a05abba8fb04acbcbe6d766da7764320db0@google.com>
Commit-Queue: Auto-Submit <14637eda5603879df170705285bf30f5996692f0@pigweed.google.com.iam.gserviceaccount.com>

google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed