Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/741865b887d0
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #17120 from KevinGrandon/bug_980984_dialer_ringer_follow_up

Bug 980984 - Follow-up, remove unused DialerComms mock

========

https://hg.mozilla.org/integration/gaia-central/rev/b465435b98c6
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 980984 - Follow-up, remove unused DialerComms mock r=me

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "branch": "", 
         "revision": ""
     }, 
-    "revision": "553d71d2b228f5c255c845e32d7a038fde18b77f", 
+    "revision": "741865b887d0b85816533dfd74a9dbaf4c332bec", 
     "repo_path": "/integration/gaia-central"
 }