avoid error when doing hydration when data socket is closed too early

when data is received, if we close the socket they cannot be read

Signed-off-by: Matthieu Gallien <matthieu.gallien@nextcloud.com>

src/libsync/vfs/cfapi/cfapiwrapper.cpp

@@ -204,7 +204,6 @@ void CALLBACK cfApiFetchDataCallback(const CF_CALLBACK_INFO *callbackInfo, const
     QObject::connect(vfs, &OCC::VfsCfApi::hydrationRequestFinished, &loop, [&](const QString &id) {
         qDebug(lcCfApiWrapper) << "Hydration finished for request" << id;
         if (requestId == id) {
-            socket.close();
             signalSocket.close();
             loop.quit();
         }