Simplify LMR for captures by removing capture's stat score logic for reduction.
STC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 37068 W: 7462 L: 7370 D: 22236
http://tests.stockfishchess.org/tests/view/
5b115bc30ebc591af58a6fd2
LTC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 80061 W: 11706 L: 11671 D: 56684
http://tests.stockfishchess.org/tests/view/
5b117f590ebc59033d2d5315
Closes https://github.com/official-stockfish/Stockfish/pull/1631
Bench:
4470519