Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/f10c7f33dcf5
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Merge pull request #11421 from lissyx/bug900848

Bug 900848 - Use withheld-number string key instead of unknown in call log r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/bb08fbdbb2bf
Author: Alexandre Lissy <lissyx+github@lissyx.dyndns.org>
Desc: Bug 900848 - Use withheld-number string key instead of unknown in call log

Also remove a portion of dead code that was referring to the unknown
key: since |Utils.getPhoneNumberPrimaryInfo| will return null in case
|matchingTel| is invalid, it means that either way we will have been
thrown out of this code previously, since the |matchingTel| is being
checked for in the if() code just above.