- Eliminated several unused motion control methods from the controller interface and implementation, including Content, LeftFlip, BackFlip, HandStand, FreeWalk, FreeBound, FreeJump, FreeAvoid, ClassicWalk, WalkUpright, CrossStep, AutoRecoverSet, StaticWalk, TrotRun, and EconomicGait. This cleanup simplifies the code structure and improves maintainability.