Debugger: Remove thread handler location reset handling

Has not been needed since Utils::TreeModel was used.

Change-Id: Iff60a631e306e9756f83d70eacf19c2fe49bcedd
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/debugger/debuggerengine.cpp

@@ -378,7 +378,6 @@ public:
     {
         m_stackHandler.scheduleResetLocation();
         m_watchHandler.scheduleResetLocation();
-        m_threadsHandler.scheduleResetLocation();
         m_disassemblerAgent.scheduleResetLocation();
         m_locationTimer.setSingleShot(true);
         m_locationTimer.start(80);
@@ -391,7 +390,6 @@ public:
         m_locationMark.reset();
         m_stackHandler.resetLocation();
         m_watchHandler.resetLocation();
-        m_threadsHandler.resetLocation();
         m_disassemblerAgent.resetLocation();
         m_toolTipManager.resetLocation();
     }

src/plugins/debugger/threadshandler.cpp

@@ -398,19 +398,6 @@ void ThreadsHandler::updateThreads(const GdbMi &data)
     m_currentThread = threadForId(currentId);
 }
 
-void ThreadsHandler::scheduleResetLocation()
-{
-    m_resetLocationScheduled = true;
-}
-
-void ThreadsHandler::resetLocation()
-{
-    if (m_resetLocationScheduled) {
-        m_resetLocationScheduled = false;
-        layoutChanged();
-    }
-}
-
 QAbstractItemModel *ThreadsHandler::model()
 {
     return this;

src/plugins/debugger/threadshandler.h

@@ -97,9 +97,6 @@ public:
     void notifyRunning(const QString &id);
     void notifyStopped(const QString &id);
 
-    void resetLocation();
-    void scheduleResetLocation();
-
 private:
     void sort(int column, Qt::SortOrder order) override;
     QVariant data(const QModelIndex &index, int role) const override;
@@ -107,7 +104,6 @@ private:
 
     DebuggerEngine *m_engine;
     Thread m_currentThread;
-    bool m_resetLocationScheduled = false;
     QHash<QString, QString> m_pidForGroupId;
 };