Removed unused PropertySectionfilter Class

plugins/org.yakindu.sct.ui.editor/src/org/yakindu/sct/ui/editor/StatePropertySectionFilter.java

@@ -1,15 +0,0 @@
-package org.yakindu.sct.ui.editor;
-
-import org.eclipse.jface.viewers.IFilter;
-import org.yakindu.sct.ui.editor.editparts.AbstractStateEditPart;
-import org.yakindu.sct.ui.editor.editparts.StateEditPart;
-import org.yakindu.sct.ui.editor.editparts.StateNameEditPart;
-
-public class StatePropertySectionFilter implements IFilter {
-
-	public boolean select(Object toTest) {
-		return (toTest instanceof AbstractStateEditPart
-				|| toTest instanceof StateEditPart || toTest instanceof StateNameEditPart);
-	}
-
-}