cleanup + opencv4 include

source/RobotAPI/libraries/skills/core/Skill.h

@@ -2,7 +2,6 @@
 
 #include <functional>
 #include <mutex>
-#include <queue>
 #include <thread>
 
 #include <ArmarXCore/core/logging/Logging.h>
@@ -14,10 +13,8 @@
 
 #include "SkillDescription.h"
 #include "SkillID.h"
-#include "SkillPreparationInput.h"
 #include "SkillProxy.h"
 #include "SkillStatusUpdate.h"
-#include "error/Exception.h"
 
 namespace armarx
 {