Silence env errors

Author: javizqh

scripts/.env

@@ -4,7 +4,7 @@ source /usr/share/gazebo/setup.bash
 source /home/industrial_ws/install/setup.bash
 source /home/drones_ws/install/setup.bash
 source /home/ws/install/setup.bash
-source /workspace/worlds/install/setup.bash
+source /workspace/worlds/install/setup.bash &>/dev/null
 
 export ROBOTICS_ACADEMY_BASE=/RoboticsAcademy
 export PYTHONPATH=$PYTHONPATH:$ROBOTICS_ACADEMY_BASE