Bug 1719491 - revert clang-format of tools/profiler/public/GeckoTraceEvent.h. r=ng

Bug 1714577 meant to exclude tools/profiler/public/GeckoTraceEvent.h from
clang-format, but the trailing comment in .clang-format-ignored broke that.
Bug 1519636 then formatted the file.

This fixes the exclusion in .clang-format-ignore and backs out the
clang-format on tools/profiler/public/GeckoTraceEvent.h.

Differential Revision: https://phabricator.services.mozilla.com/D119297