refactor(custom_robot): Remove FootRaiseHeight command processing

- Deleted the FootRaiseHeight command processing from the CustomRobot class to streamline command handling and eliminate unused functionality.

src/custom_robot.cpp

@@ -846,8 +846,6 @@ bool CustomRobot::processSportCmd(const std::string& cmd, const nlohmann::json&
                 return false;
             }
             return controller_->TrajectoryFollow(path);
-        } else if (cmd == "FootRaiseHeight") {
-            return controller_->FootRaiseHeight(message["param"]["height"]);
         } else if (cmd == "start_traj") {
             return startTraj();
         } else if (cmd == "stop_traj") {