Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/672459abdd64
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Revert "Merge pull request #17810 from gitmai/bug-987142-CC-jshint-fix-2"

This reverts commit 53cdd2b2d8d820d242d3fbccb32c73fb2c9515b0, reversing
changes made to 047855a5e077e9931a864cc2fe802eb42991826b.
Bumping manifests a=b2g-bump