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

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https://hg.mozilla.org/integration/gaia-1_4/rev/eaf3a2e6248e
Author: KWierso <kwierso@gmail.com>
Desc: Revert "Merge pull request #20247 from justindarc/bug1014955-v1.4" for gaia-unit test failure

This reverts commit 43da85450074e655b0ee83d3d8d5f4fb6b3c473a, reversing
changes made to 765438e65bc23bbda6c82b4093edcd70eb58e8ad.
Bumping manifests a=b2g-bump