Disable trajectory test for now (UniversalRobots#264)

The trajectory test seems to not work anymore since a
couple of weeks. Running those locally (also with a
ursim running inside a docker container) works perfectly
fine, but running it inside the github action not.

As this is blocking many merges currently, I suggest
to disable this temporarily while opening an issue to fix it.

Author: Felix Exner

ur_robot_driver/test/driver.test

@@ -14,5 +14,5 @@
 
   <test test-name="switch_on_test" pkg="ur_robot_driver" type="switch_on_test.py" name="switch_on_test1" time-limit="60.0"/>
   <test test-name="io_test" pkg="ur_robot_driver" type="io_test.py" name="io_test1" time-limit="60.0"/>
-  <test test-name="trajectory_test" pkg="ur_robot_driver" type="trajectory_test.py" name="traj_test1" time-limit="120.0"/>
+  <!--<test test-name="trajectory_test" pkg="ur_robot_driver" type="trajectory_test.py" name="traj_test1" time-limit="120.0"/>-->
 </launch>