Simplify losing chess material evaluation

Simplify losing chess material evaluation

giveaway STC
LLR: 2.97 (-2.94,2.94) [-10.00,5.00]
Total: 922 W: 372 L: 323 D: 227
http://www.variantfishtest.org:6543/tests/view/5fe330d46e23db221d9e967c

giveaway LTC
LLR: 2.98 (-2.94,2.94) [-10.00,5.00]
Total: 1718 W: 652 L: 609 D: 457
http://www.variantfishtest.org:6543/tests/view/5fe346dd6e23db221d9e9688

losers STC
LLR: 2.99 (-2.94,2.94) [-10.00,5.00]
Total: 485 W: 241 L: 183 D: 61
http://www.variantfishtest.org:6543/tests/view/5fe346ee6e23db221d9e968a

losers LTC
LLR: 2.96 (-2.94,2.94) [-10.00,5.00]
Total: 547 W: 273 L: 215 D: 59
http://www.variantfishtest.org:6543/tests/view/5fe34b7d6e23db221d9e968c