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

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https://hg.mozilla.org/integration/gaia-2_1/rev/a69af75bd3c1
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Revert "Bug 1074028 - Overlapping rocketbar and statusbar icons for 3rd party apps"

This reverts commit 3cc2b505981b588b9811975302015e61537069f5.
Bumping manifests a=b2g-bump