ProjectExplorer: Remove some unused BuildManager signals

Change-Id: Iea832e96b726db9b93c235a57d6285337df7734d
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/projectexplorer/buildmanager.cpp

@@ -265,9 +265,6 @@ BuildManager::BuildManager(QObject *parent, QAction *cancelBuildAction)
     connect(d->m_taskWindow, &Internal::TaskWindow::tasksChanged,
             this, &BuildManager::updateTaskCount);
 
-    connect(d->m_taskWindow, &Internal::TaskWindow::tasksCleared,
-            this,&BuildManager::tasksCleared);
-
     connect(&d->m_progressWatcher, &QFutureWatcherBase::canceled,
             this, &BuildManager::cancel);
     connect(&d->m_progressWatcher, &QFutureWatcherBase::finished,
@@ -457,7 +454,6 @@ void BuildManager::updateTaskCount()
 {
     const int errors = getErrorTaskCount();
     ProgressManager::setApplicationLabel(errors > 0 ? QString::number(errors) : QString());
-    emit m_instance->tasksChanged();
 }
 
 void BuildManager::finish()

src/plugins/projectexplorer/buildmanager.h

@@ -102,9 +102,6 @@ public slots:
 signals:
     void buildStateChanged(ProjectExplorer::Project *pro);
     void buildQueueFinished(bool success);
-    void tasksChanged();
-    void taskAdded(const ProjectExplorer::Task &task);
-    void tasksCleared();
 
 private:
     static void addToTaskWindow(const ProjectExplorer::Task &task, int linkedOutputLines, int skipLines);

src/plugins/projectexplorer/taskwindow.cpp

@@ -380,7 +380,6 @@ void TaskWindow::clearTasks(Core::Id categoryId)
     d->m_model->clearTasks(categoryId);
 
     emit tasksChanged();
-    emit tasksCleared();
     navigateStateChanged();
 }
 

src/plugins/projectexplorer/taskwindow.h

@@ -79,7 +79,6 @@ public:
 
 signals:
     void tasksChanged();
-    void tasksCleared();
 
 private:
     void updateFilter() override;