Retire non capturing evasion pruning in qsearch()
Based on my experience in DiscoCheck, I know that this is at least useless, and most likely harmful. Same for the PvNode condition, which doesn't make any sense. Confirmed intesting:

6000 games in 10"+0.1"
1299-1221-3480 [50.6%] LOS=94.0%

signature=5168496