Simplify movepick coefficients #5680
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bench 866155
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Tweak/simplify movepick coefficients
This commit sets movepick weights for all continuation histories to 1 and doubles the weight for the main history, inspired by a recent tune.
Passed STC
https://tests.stockfishchess.org/tests/view/6735151a86d5ee47d953eaa2
LLR: 2.92 (-2.94,2.94) <-1.75,0.25>
Total: 29984 W: 7840 L: 7612 D: 14532
Ptnml(0-2): 85, 3511, 7571, 3741, 84
Passed LTC
https://tests.stockfishchess.org/tests/view/673667a986d5ee47d953ec78
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 26268 W: 6726 L: 6510 D: 13032
Ptnml(0-2): 16, 2797, 7288, 3021, 12
Bench: 866155