nvbios: Print PCOPY speed and kill unused variable
nvbios: Print PCOPY speed and kill unused variable

Fixes compiler warnings

pierremoreau/envytools,karolherbst/envytools,MoochMcGee/envytools,MoochMcGee/envytools,hakzsam/envytools,envytools/envytools,grate-driver/envytools,pierremoreau/envytools,pierremoreau/envytools,grate-driver/envytools,hakzsam/envytools,envytools/envytools,grate-driver/envytools,envytools/envytools,hakzsam/envytools,MoochMcGee/envytools,hakzsam/envytools,kfractal/envytools,pierremoreau/envytools,kfractal/envytools,karolherbst/envytools,hakzsam/envytools,pierremoreau/envytools,kfractal/envytools,kfractal/envytools,karolherbst/envytools,envytools/envytools,karolherbst/envytools,grate-driver/envytools,grate-driver/envytools,MoochMcGee/envytools,karolherbst/envytools,kfractal/envytools,MoochMcGee/envytools,envytools/envytools