Revert proguard-rules.pro (#96)

Author: elliotykim

shared/proguard-rules.pro

@@ -15,10 +15,3 @@
 #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
 #   public *;
 #}
-
--keepnames class com.google.gson.Gson
--keepnames class com.fasterxml.jackson.databind.ObjectMapper
--keepnames class org.json.simple.JSONObject
--keepnames class org.json.JSONObject
-
--keep class com.optimizely.ab.** { *; }