Remove unnecessary TensorFlow and NumPy dependencies from package.xml to streamline package requirements.

Author: GyuH13

turtlebot3_dqn/package.xml

@@ -16,8 +16,6 @@
   <exec_depend>python3-pip</exec_depend>
   <exec_depend>ament_index_python</exec_depend>
   <exec_depend>geometry_msgs</exec_depend>
-  <exec_depend>python-tensorflow-pip</exec_depend>
-  <exec_depend>python3-numpy</exec_depend>
   <exec_depend>python3-pyqt5</exec_depend>
   <exec_depend>python3-pyqtgraph</exec_depend>
   <exec_depend>rclpy</exec_depend>