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

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https://hg.mozilla.org/integration/gaia-central/rev/dc7a50bca585
Author: Arthur Chen <crh0716@gmail.com>
Desc: Revert "Bug 928851 - Adopt new API of enabling/disabing RIL radio"

This reverts commit 2cd2a529e5f1ab72569886998435bc46e22bf825.
Bumping gaia.json for 3 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/45da563521df
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 928851 - Adopt new API of enabling/disabing RIL radio

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https://hg.mozilla.org/integration/gaia-central/rev/58f3c3b357d2
Author: Ben Kelly <bkelly@mozilla.com>
Desc: Merge pull request #13488 from wanderview/contacts-fast-remove

Bug 936206: Short-circuit contact remove().  r=jmcf

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https://hg.mozilla.org/integration/gaia-central/rev/ff76872c96f2
Author: Ben Kelly <ben@wanderview.com>
Desc: Bug 936206: Short-circuit contact remove().
Bug 932770 - [bluedroid] Implement GetPairedDeviceInternal, r=echou