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

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https://hg.mozilla.org/integration/gaia-central/rev/cd6102d5b215
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #25196 from KevinGrandon/bug_1083521_remove_old_ci

Bug 1083521 - Remove old CI scripts

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https://hg.mozilla.org/integration/gaia-central/rev/2d00455d9645
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1083521 - Remove old CI scripts r=gaye

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "2e1e72454fc457a41409ebf41fe3e8b09cc9a8cd", 
+    "revision": "cd6102d5b21510a135d58e58f3ada7e733833025", 
     "repo_path": "/integration/gaia-central"
 }