Summary:
Removed unused file YogaNodeJNIPhantomRefs.java as this was causing oss build failures because of an import.
````:yoga:compileDebugJavaWithJavac/home/travis/build/facebook/yoga/java/com/facebook/yoga/YogaNodeJNIPhantomRefs.java:9: error: package com.facebook.jni does not exist
import com.facebook.jni.DestructorThread;
^
/home/travis/build/facebook/yoga/java/com/facebook/yoga/YogaNodeJNIPhantomRefs.java:30: error: package DestructorThread does not exist
new DestructorThread.Destructor(node) {
^
2 errors
FAILED
Reviewed By: pasqualeanatriello
Differential Revision: D17257330
fbshipit-source-id: 98b0c5d5b7dcd94bee559b58194c13b07f47723d
a08a57b33c