removed skill provider dependency from kinematic unit and removed skill observer

source/RobotAPI/components/SkillObserver/CMakeLists.txt

.../Examples/MoveJointSkillExample/MoveJointSkillExample.cpp

...er/Examples/MoveJointSkillExample/MoveJointSkillExample.h

source/RobotAPI/components/SkillObserver/SkillObserver.cpp

source/RobotAPI/components/SkillObserver/SkillObserver.h

...otAPI/components/SkillObserver/test/SkillObserverTest.cpp

source/RobotAPI/components/units/KinematicUnit.cpp

source/RobotAPI/components/units/KinematicUnit.h

...lObserverMonitor/SkillObserverMonitorWidgetController.cpp

...illObserverMonitor/SkillObserverMonitorWidgetController.h

source/RobotAPI/interface/skills/SkillObserverInterface.ice

source/RobotAPI/interface/skills/SkillProviderInterface.ice

source/RobotAPI/interface/units/KinematicUnitInterface.ice