fixed compiler warnings by removing some stuff (#774)
fixed compiler warnings by removing some stuff (#774)

Start and StartAsync from node builder in nbitcoin tests
it was never used and it used uninitialized variables anyway ...
Neurosploit/StratisBitcoinFullNode,Aprogiena/StratisBitcoinFullNode,mikedennis/StratisBitcoinFullNode,quantumagi/StratisBitcoinFullNode,Neurosploit/StratisBitcoinFullNode,fassadlr/StratisBitcoinFullNode,quantumagi/StratisBitcoinFullNode,bokobza/StratisBitcoinFullNode,bokobza/StratisBitcoinFullNode,Aprogiena/StratisBitcoinFullNode,Neurosploit/StratisBitcoinFullNode,mikedennis/StratisBitcoinFullNode,stratisproject/StratisBitcoinFullNode,mikedennis/StratisBitcoinFullNode,fassadlr/StratisBitcoinFullNode,bokobza/StratisBitcoinFullNode,mikedennis/StratisBitcoinFullNode,stratisproject/StratisBitcoinFullNode,bokobza/StratisBitcoinFullNode,Aprogiena/StratisBitcoinFullNode