Removed import that is not used

Author: KristianKarl

graphwalker-core/src/main/java/org/graphwalker/core/statistics/Profiler.java

@@ -27,7 +27,6 @@
  */
 
 import org.graphwalker.core.machine.Context;
-import org.graphwalker.core.machine.RequirementStatus;
 import org.graphwalker.core.model.Edge;
 import org.graphwalker.core.model.Element;
 import org.graphwalker.core.model.Path;