Replace use of netprops with an sdkcall to remove extra wearables.

Ok, while I was poking around tf2's server_srv.so binary with ida 6.6 demo, I came accross this SDK function called RemoveExtraWearables, testing it with the call in tf2_stocks revealed that it looks VERY promising as an alternative to using netprops.  
I need to know if I setup extension's call right.