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

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https://hg.mozilla.org/integration/gaia-central/rev/d75fe24ddd89
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 1152402 - merge pull request #29466 from KevinGrandon:bug_1152402_remove_w033_workaround to mozilla-b2g:master

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https://hg.mozilla.org/integration/gaia-central/rev/e25888c4e384
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1152402 - Remove W033 workaround r=kgrandon

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "0e77bc9f9e34f6dda4dc740b022446c419c8c04e", 
+        "git_revision": "660a4701a86e748d13adeb4cb71ac8a8e8dd1ef6", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "58caf5c31568bb70b6c70fe1e8f4bb76afec4c65", 
+    "revision": "d75fe24ddd89df106b72377f2c632dc66e3dc40e", 
     "repo_path": "integration/gaia-central"
 }