fix import error!

Author: alexsukhin

jabgui/src/main/java/org/jabref/gui/cleanup/CleanupDialogViewModel.java

@@ -16,7 +16,7 @@
 import org.jabref.gui.DialogService;
 import org.jabref.gui.LibraryTab;
 import org.jabref.gui.StateManager;
-import org.jabref.gui.undo.NamedCompound;
+import org.jabref.gui.logic.NamedCompound;
 import org.jabref.gui.undo.UndoableFieldChange;
 import org.jabref.logic.JabRefException;
 import org.jabref.logic.cleanup.CleanupPreferences;