Dealloc JNI implementation experiment

Summary:
@public

Remove ability to configure Yoga to run with/without JNI fast calls on dalvik / art.
This switches to always run with fast calls.

Reviewed By: astreet

Differential Revision: D13144652

fbshipit-source-id: 091aab0cd1290d46346323d3e26a11dd0bb17187

java/com/facebook/yoga/YogaConfig.java

@@ -8,6 +8,7 @@
 package com.facebook.yoga;
 
 import com.facebook.proguard.annotations.DoNotStrip;
+import com.facebook.soloader.SoLoader;
 
 @DoNotStrip
 public class YogaConfig {
@@ -15,7 +16,7 @@ public class YogaConfig {
   public static int SPACING_TYPE = 1;
 
   static {
-      YogaJNI.init();
+    SoLoader.loadLibrary("yoga");
   }
 
   long mNativePointer;