pk: don't show an error notice when a reboot is necessary

The UpdatesPage will also do it, and so will the notifier. No need to
have it everywhere.

libdiscover/backends/PackageKitBackend/PackageKitUpdater.cpp

@@ -187,7 +187,6 @@ void PackageKitUpdater::setupTransaction(PackageKit::Transaction::TransactionFla
     connect(m_transaction.data(), &PackageKit::Transaction::package, this, &PackageKitUpdater::packageResolved);
     connect(m_transaction.data(), &PackageKit::Transaction::errorCode, this, &PackageKitUpdater::errorFound);
     connect(m_transaction.data(), &PackageKit::Transaction::mediaChangeRequired, this, &PackageKitUpdater::mediaChange);
-    connect(m_transaction.data(), &PackageKit::Transaction::requireRestart, this, &PackageKitUpdater::requireRestart);
     connect(m_transaction.data(), &PackageKit::Transaction::eulaRequired, this, &PackageKitUpdater::eulaRequired);
     connect(m_transaction.data(), &PackageKit::Transaction::repoSignatureRequired, this, &PackageKitUpdater::repoSignatureRequired);
     connect(m_transaction.data(), &PackageKit::Transaction::allowCancelChanged, this, &PackageKitUpdater::cancellableChanged);
@@ -418,11 +417,6 @@ void PackageKitUpdater::mediaChange(PackageKit::Transaction::MediaType media, co
     Q_EMIT passiveMessage(i18n("Media Change of type '%1' is requested.\n%2", type, text));
 }
 
-void PackageKitUpdater::requireRestart(PackageKit::Transaction::Restart restart, const QString& pkgid)
-{
-    Q_EMIT passiveMessage(PackageKitMessages::restartMessage(restart, pkgid));
-}
-
 void PackageKitUpdater::eulaRequired(const QString& eulaID, const QString& packageID, const QString& vendor, const QString& licenseAgreement)
 {
     m_proceedFunctions << [eulaID](){

libdiscover/backends/PackageKitBackend/PackageKitUpdater.h

@@ -47,7 +47,6 @@ class PackageKitUpdater : public AbstractBackendUpdater
     private Q_SLOTS:
         void errorFound(PackageKit::Transaction::Error err, const QString& error);
         void mediaChange(PackageKit::Transaction::MediaType media, const QString& type, const QString& text);
-        void requireRestart(PackageKit::Transaction::Restart restart, const QString& p);
         void eulaRequired(const QString &eulaID, const QString &packageID, const QString &vendor, const QString &licenseAgreement);
         void finished(PackageKit::Transaction::Exit exit, uint);
         void cancellableChanged();