qt5: Don't need this friend declaration
diff --git a/qt5/src/poppler-link.h b/qt5/src/poppler-link.h
index 0ce4c0d..938f8b1 100644
--- a/qt5/src/poppler-link.h
+++ b/qt5/src/poppler-link.h
@@ -178,7 +178,6 @@
 class POPPLER_QT5_EXPORT Link
 {
 	friend class OptContentModel;
-	friend class LinkPrivate;
 
 	public:
 		/// \cond PRIVATE