Remove Duplicate Perspective Code

Description

Since both sides of accumulators are updated altogether, it is possible to reduce some code (i.e. computed) that is unnecessary.

Branches

• 38e0cc7b-5

Tests

Test #1

Stockfish Testing Framework

Result

Failed

Stats

LLR: -2.93 (-2.94,2.94) <0.00,2.00>
Total: 33696 W: 8586 L: 8795 D: 16315
Ptnml(0-2): 120, 3989, 8816, 3826, 97