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

========

https://hg.mozilla.org/integration/gaia-central/rev/16e1bcb1ef74
Author: Ed Morley <emorley@mozilla.com>
Desc: Revert "Bug 1054135 - [B2G][System] support 24 hour time format for Time picker" for JS exceptions

This reverts commit e2497c1445af5fa46d8b1aa9d3228ac68b0795b5.

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "8a7eb48c501cdbc6e738543745e482c4551fa273", 
+    "revision": "16e1bcb1ef744dbffbc9330ac395fa275d178fd0", 
     "repo_path": "/integration/gaia-central"
 }