Update BPEventHandler.java - commented the onChunkLoad -> not highly needed and does crash

Hey,

I commented the onChunkLoad Event as it does cause the host to crash due to concurrent issues:
http://pastebin.com/aWxuTjEm

I'm not sure if you want to fix it directly or if you would prefer bringing out a hot fix build without the event so people can enjoy the latest version of your mod. The source might even be outside of your reach (I'm not a developer) but I think making it thread safe wouldn't be hard.