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

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https://hg.mozilla.org/integration/gaia-2_1/rev/3b99b341abec
Author: Ed Morley <emorley@mozilla.com>
Desc: Revert "Bug 1038496 - Re-enable radio when rild crashes"

This reverts commit 171b6b8ceb6fe782121e596859a3868923e0c36c.
Bumping manifests a=b2g-bump