Put conditioned header under appropriate feature configuration

- Add #if QT_CONFIG(xmlstream) for qxmlstream.h usage
in removed_api.cpp

Amends cd5dd8b95b

Change-Id: Ibb5962ff1ee9d26a2f115c6cf0a8b9b88109fab7
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>

src/corelib/compat/removed_api.cpp

@@ -1179,7 +1179,9 @@ QUuid QUuid::createUuidV5(const QUuid &ns, const QByteArray &baseData) noexcept
     return createUuidV5(ns, qToByteArrayViewIgnoringNull(baseData));
 }
 
+#if QT_CONFIG(xmlstream)
 #include "qxmlstream.h" // inlined API
+#endif // QT_CONFIG(xmlstream)
 
 // #include "qotherheader.h"
 // // implement removed functions from qotherheader.h