Remove unnecessary bower resolutions.

bower.json

@@ -20,12 +20,6 @@
     "strophejs-plugins": "https://github.com/strophe/strophejs-plugins.git#amd",
     "bourbon": "~4.2.6"
   },
-  "resolutions": {
-    "backbone": "1.1.2",
-    "requirejs": "~2.2.0",
-    "jquery": "1.12.3",
-    "sinon": "^1.17.3"
-  },
   "exportsOverride": {},
   "ignore": [
     "docs",