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

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https://hg.mozilla.org/integration/gaia-central/rev/f22c641c064a
Author: Ben Kelly <ben@wanderview.com>
Desc: Revert "Bug 920561 - Ensure LazyLoader.load does not slow down app rendering. r=mbudzynski"

This reverts commit 6dcb079db2ad16a2b2995c039f358ff9d6a2f6d4.