PRESUBMIT: Remove unnecessary escape of forward slash Bug: angleproject:7279 Change-Id: Icf9482fb83c60640d5af6380674b9d857aa9ff0b Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3828443 Reviewed-by: Roman Lavrov <romanl@google.com> Auto-Submit: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Roman Lavrov <romanl@google.com>