No pruning in PV nodes

Run in simplification -3,1 SPRT mode.

STC
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 121082 W: 24243 L: 24306 D: 72533

LTC
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 12119 W: 2126 L: 1991 D: 8002