[script] delete old scripts

script/tests/darpa_hyq_interp.py

script/tests/darpa_hyq_path.py

script/tests/robot_bigStep_STEVE_path.py

script/tests/robot_bigStep_path.py

script/tests/robot_jumpEasy_path.py

script/tests/robot_test_path.py

script/tests/robot_withBridge_path.py

script/tests/truck_hrp2_interp.py

script/tests/truck_hrp2_path.py