QCoreApplication::requestPermissions: honor QT_NO_CONTEXTLESS_CONNECT

Hide the overload that doesn't take a context object.

Change-Id: Ibf8a46ad514b00be855be6fd7c72d6464881bb25
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

src/corelib/kernel/qcoreapplication.h

@@ -142,6 +142,7 @@ public:
     }
 # endif // Q_QDOC
 
+#ifndef QT_NO_CONTEXTLESS_CONNECT
     // requestPermission to a functor or function pointer (without context)
     template <typename Functor,
               std::enable_if_t<
@@ -151,6 +152,7 @@ public:
     {
         requestPermission(permission, nullptr, std::forward<Functor>(func));
     }
+#endif // QT_NO_CONTEXTLESS_CONNECT
 
 private:
     // ### Qt 7: rename to requestPermissionImpl to avoid ambiguity