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

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https://hg.mozilla.org/integration/gaia-central/rev/7343851c97c2
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Revert "Bug 907177 - [Clock] Add integration tests"

This reverts commit bddf28e63207e30e0cec38c60a98490117b32c89.