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

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https://hg.mozilla.org/integration/gaia-central/rev/588272904989
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Revert "Merge pull request #15857 from comoyo/bug964216"

This reverts commit d8bdd6e84ccbb9027f811e42373cbdd53977980a, reversing
changes made to bcecb91f5ef7b0d9e426dbda489baee424eed93c.
Bumping manifests a=b2g-bump