diff --git a/shell/shellcorona.h b/shell/shellcorona.h
--- a/shell/shellcorona.h
+++ b/shell/shellcorona.h
@@ -187,9 +187,6 @@
     void addOutput(QScreen* screen);
     void primaryOutputChanged();
 
-    void activityOpened();
-    void activityClosed();
-    void activityRemoved();
     void panelContainmentDestroyed(QObject* cont);
     void desktopContainmentDestroyed(QObject*);
     void showOpenGLNotCompatibleWarning();
diff --git a/shell/shellcorona.cpp b/shell/shellcorona.cpp
--- a/shell/shellcorona.cpp
+++ b/shell/shellcorona.cpp
@@ -189,7 +189,7 @@
 
     connect(m_activityConsumer, &KActivities::Consumer::currentActivityChanged, this, &ShellCorona::currentActivityChanged);
     connect(m_activityConsumer, &KActivities::Consumer::activityAdded, this, &ShellCorona::activityAdded);
-    connect(m_activityConsumer, SIGNAL(activityRemoved(QString)), this, SLOT(activityRemoved(QString)));
+    connect(m_activityConsumer, &KActivities::Consumer::activityRemoved, this, &ShellCorona::activityRemoved);
 
     new Osd(this);
 
@@ -1565,38 +1565,6 @@
     return -1;
 }
 
-void ShellCorona::activityOpened()
-{
-    Activity *activity = qobject_cast<Activity *>(sender());
-    if (activity) {
-        QList<Plasma::Containment*> cs = importLayout(activity->config());
-        for (Plasma::Containment *containment : cs) {
-            insertContainment(activity->name(), containment->lastScreen(), containment);
-        }
-    }
-}
-
-void ShellCorona::activityClosed()
-{
-    Activity *activity = qobject_cast<Activity *>(sender());
-    if (activity) {
-        KConfigGroup cg = activity->config();
-        exportLayout(cg, m_desktopContainments.value(activity->name()).values());
-    }
-}
-
-void ShellCorona::activityRemoved()
-{
-    //when an activity is removed delete all associated desktop containments
-    Activity *activity = qobject_cast<Activity *>(sender());
-    if (activity) {
-        QHash< int, Plasma::Containment* > containmentHash = m_desktopContainments.take(activity->name());
-        for (auto a : containmentHash) {
-            a->destroy();
-        }
-    }
-}
-
 void ShellCorona::nextActivity()
 {
     const QStringList list = m_activityConsumer->activities(KActivities::Info::Running);