Perform clean code of ua/org.eclipse.ui.cheatsheets

Author: eclipse-platform-bot

ua/org.eclipse.ui.cheatsheets/src/org/eclipse/ui/internal/cheatsheets/composite/views/CompositeCheatSheetPage.java

@@ -67,7 +67,6 @@
  * A page which represents a composite cheat sheet
  */
 
-@SuppressWarnings("deprecation") // java.util.Observable since 9;
 public class CompositeCheatSheetPage extends Page implements ISelectionChangedListener, IMenuContributor {
 
 	public static final String REVIEW_TAG = "__review__"; //$NON-NLS-1$