diff --git a/src/plugins/coreplugin/fancytabwidget.cpp b/src/plugins/coreplugin/fancytabwidget.cpp
index c72b89762df..00f5d74fcc9 100644
--- a/src/plugins/coreplugin/fancytabwidget.cpp
+++ b/src/plugins/coreplugin/fancytabwidget.cpp
@@ -551,12 +551,6 @@ void FancyTabWidget::insertTab(int index, QWidget *tab, const QIcon &icon, const
     m_tabBar->insertTab(index, icon, label, hasMenu);
 }
 
-void FancyTabWidget::removeTab(int index)
-{
-    m_modesStack->removeWidget(m_modesStack->widget(index));
-    m_tabBar->removeTab(index);
-}
-
 void FancyTabWidget::setBackgroundBrush(const QBrush &brush)
 {
     QPalette pal;
diff --git a/src/plugins/coreplugin/fancytabwidget.h b/src/plugins/coreplugin/fancytabwidget.h
index 8c5544665df..c52376c5456 100644
--- a/src/plugins/coreplugin/fancytabwidget.h
+++ b/src/plugins/coreplugin/fancytabwidget.h
@@ -109,12 +109,6 @@ public:
         updateGeometry();
     }
     void setEnabled(int index, bool enabled);
-    void removeTab(int index)
-    {
-        FancyTab *tab = m_tabs.takeAt(index);
-        delete tab;
-        updateGeometry();
-    }
     void setCurrentIndex(int index);
     int currentIndex() const { return m_currentIndex; }
 
@@ -148,7 +142,6 @@ public:
     FancyTabWidget(QWidget *parent = nullptr);
 
     void insertTab(int index, QWidget *tab, const QIcon &icon, const QString &label, bool hasMenu);
-    void removeTab(int index);
     void setBackgroundBrush(const QBrush &brush);
     void addCornerWidget(QWidget *widget);
     void insertCornerWidget(int pos, QWidget *widget);
diff --git a/src/plugins/coreplugin/imode.cpp b/src/plugins/coreplugin/imode.cpp
index 2e8e27c3bed..0a283ee11e0 100644
--- a/src/plugins/coreplugin/imode.cpp
+++ b/src/plugins/coreplugin/imode.cpp
@@ -125,14 +125,6 @@ IMode::IMode(QObject *parent) : IContext(parent)
     ModeManager::addMode(this);
 }
 
-/*!
-    Unregisters the mode from \QC and destroys it.
-*/
-IMode::~IMode()
-{
-    ModeManager::removeMode(this);
-}
-
 void IMode::setEnabled(bool enabled)
 {
     if (m_isEnabled == enabled)
diff --git a/src/plugins/coreplugin/imode.h b/src/plugins/coreplugin/imode.h
index 335d5f5679c..a937b1e93d4 100644
--- a/src/plugins/coreplugin/imode.h
+++ b/src/plugins/coreplugin/imode.h
@@ -46,7 +46,6 @@ class CORE_EXPORT IMode : public IContext
 
 public:
     IMode(QObject *parent = nullptr);
-    ~IMode() override;
 
     QString displayName() const { return m_displayName; }
     QIcon icon() const { return m_icon; }
diff --git a/src/plugins/coreplugin/modemanager.cpp b/src/plugins/coreplugin/modemanager.cpp
index 46173ef8e94..c8c33519e1d 100644
--- a/src/plugins/coreplugin/modemanager.cpp
+++ b/src/plugins/coreplugin/modemanager.cpp
@@ -275,19 +275,6 @@ void ModeManagerPrivate::enabledStateChanged(IMode *mode)
     }
 }
 
-void ModeManager::removeMode(IMode *mode)
-{
-    const int index = d->m_modes.indexOf(mode);
-    d->m_modes.remove(index);
-    if (d->m_startingUp)
-        return;
-
-    d->m_modeCommands.remove(index);
-    d->m_modeStack->removeTab(index);
-
-    d->m_mainWindow->removeContextObject(mode);
-}
-
 /*!
     Adds the \a action to the mode selector's tool bar.
     Actions are sorted by \a priority in descending order.
diff --git a/src/plugins/coreplugin/modemanager.h b/src/plugins/coreplugin/modemanager.h
index 811a4d10323..7ba0393ce86 100644
--- a/src/plugins/coreplugin/modemanager.h
+++ b/src/plugins/coreplugin/modemanager.h
@@ -84,7 +84,6 @@ private:
     static void extensionsInitialized();
 
     static void addMode(IMode *mode);
-    static void removeMode(IMode *mode);
     void currentTabAboutToChange(int index);
     void currentTabChanged(int index);