Removed unnecessary imports in ik_test.py

hexapod_python/ik_test.py

@@ -1,6 +1,3 @@
-from geometry_msgs.msg import Point, Pose
-from trajectory_msgs.msg import JointTrajectory, JointTrajectoryPoint
-from builtin_interfaces.msg import Duration
 import rclpy
 from rclpy.node import Node