Remove empty tutorial

etc/doxygen/pages/Tutorials.dox

@@ -4,8 +4,6 @@
 
 Tutorials related to RobotAPI:
 
-\li \subpage RobotAPI-Tutorial-MoveRobotWithGui
-
 \li \subpage RobotAPI-Tutorial-MoveRobotArmAlongRectangle
 
 \li  \ref Component-ArVizExample (Example component for how to use ArViz)

etc/doxygen/pages/tutorials/TutorialMoveRobotWithGui.dox

-/**
-\page RobotAPI-Tutorial-MoveRobotWithGui Playing around with a kinematic simulation
-Prerequisites: None
-
-* explain components of scenario and link to their docu
-* startScenario
-* start gui
-* open widgets (KinematicUnitGui, RobotIK, RobotViewer, Plotting of some sensor values)
-* how to use the widgets
-*/