Remove unused Utils::NetworkAccessManager::getUrl

Change-Id: I445be50bd9460a5adad1bb7fb99479096d2d2fb4
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>

src/libs/utils/networkaccessmanager.h

@@ -47,9 +47,6 @@ public:
 
     static NetworkAccessManager *instance();
 
-public slots:
-    void getUrl(const QUrl &url);
-
 protected:
     virtual QNetworkReply* createRequest(Operation op, const QNetworkRequest &request, QIODevice *outgoingData);
 };