Remove lodash from dependencies.

Author: Mike Ng

package.json

@@ -21,7 +21,6 @@
   "homepage": "https://github.com/optimizely/javascript-sdk#readme",
   "dependencies": {
     "es6-promise": "^3.3.1",
-    "lodash": "^4.13.1",
     "optimizely-server-sdk":  "^1.3.0"
   },
   "devDependencies": {