QmakeProjectManager: Convert to using Tr::tr

Change-Id: I08393b1f27bf238c8ac0ccb99e63e56a9d21ecb5
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/qmakeprojectmanager/addlibrarywizard.h

@@ -27,8 +27,6 @@ class SummaryPage;
 
 class LibraryDetailsWidget
 {
-    Q_DECLARE_TR_FUNCTIONS(QmakeProjectManager::Internal::LibraryDetailsWidget)
-
 public:
     explicit LibraryDetailsWidget(QWidget *parent);