fix: build issues after rebase

src/backend/backend.cpp

@@ -116,26 +116,6 @@ QString Backend::buildInfo() const
             + "\nOpenSSL support: " + QVariant(QSslSocket::supportsSsl()).toString()};
 }
 
-void Backend::enableBackgroundUpdate(const bool &enabled)
-{
-    if (enabled) {
-        m_backgroundTimer.start();
-    } else {
-        m_backgroundTimer.stop();
-    }
-}
-
-void Backend::setUpdateInBackground(const bool &enabled)
-{
-    QSettings().setValue("system/updateInBackground", enabled);
-    if (enabled) {
-        qDebug() << "Update in background is enabled";
-    } else {
-        qDebug() << "Update in background is disabled";
-    }
-    enableBackgroundUpdate(enabled);
-}
-
 void Backend::setAutoScaleProject(const bool &enabled)
 {
     QSettings().setValue(Constants::Settings::ProjectManager::AutoScale, enabled);