refactor(controller): 移除未使用的MoveToPos和FastWalk方法

这些方法未被代码库其他部分调用，移除以减少维护负担

src/controller.cpp

@@ -386,18 +386,6 @@ bool Controller::TrajectoryFollow(const std::vector<std::array<float, 6>>& path)
 }
 
 
-bool Controller::MoveToPos(float x, float y, float yaw) {
-    return ExecuteSportCmd([x, y, yaw](auto* sc) {
-        return sc->MoveToPos(x, y, yaw);
-    });
-}
-
-bool Controller::FastWalk(bool flag) {
-    return ExecuteSportCmd([flag](auto* sc) {
-        return sc->FastWalk(flag);
-    });
-}
-
 bool Controller::FootRaiseHeight(float height) {
     // This function may not be available in all SportClient implementations
     // We'll provide a basic implementation that returns success