Drop KDE5FilePicker::setTitle and related signals/slots

Base class's 'Qt5FilePicker::setTitle' is the same.

Change-Id: I071bf5f962c2d8b0821d78e97793c8637f5c0a1b
Reviewed-on: https://gerrit.libreoffice.org/68044
Tested-by: Jenkins
Reviewed-by: Katarina Behrens <Katarina.Behrens@cib.de>
(cherry picked from commit 4a5761b6)
Reviewed-on: https://gerrit.libreoffice.org/72641

vcl/unx/kde5/KDE5FilePicker.hxx

@@ -77,7 +77,6 @@ public:
     virtual ~KDE5FilePicker() override;
 
     // XExecutableDialog functions
-    virtual void SAL_CALL setTitle(const OUString& rTitle) override;
     virtual sal_Int16 SAL_CALL execute() override;
 
     // XFilePicker functions
@@ -150,7 +149,6 @@ protected:
 
 Q_SIGNALS:
     sal_Int16 executeSignal();
-    void setTitleSignal(const OUString& rTitle);
     void setDefaultNameSignal(const OUString& rName);
     void setDisplayDirectorySignal(const OUString& rDir);
     OUString getDisplayDirectorySignal();
@@ -170,7 +168,6 @@ Q_SIGNALS:
     css::uno::Sequence<OUString> getSelectedFilesSignal();
 
 private Q_SLOTS:
-    void setTitleSlot(const OUString& rTitle) { return setTitle(rTitle); }
     void setDefaultNameSlot(const OUString& rName) { return setDefaultName(rName); }
     void setDisplayDirectorySlot(const OUString& rDir) { return setDisplayDirectory(rDir); }
     OUString getDisplayDirectorySlot() { return implGetDirectory(); }

vcl/unx/kde5/KDE5FilePicker2.cxx

@@ -102,9 +102,6 @@ KDE5FilePicker::KDE5FilePicker(QFileDialog::FileMode eMode)
     connect(this, &KDE5FilePicker::executeSignal, this, &KDE5FilePicker::execute,
             Qt::BlockingQueuedConnection);
 
-    // XExecutableDialog
-    connect(this, &KDE5FilePicker::setTitleSignal, this, &KDE5FilePicker::setTitleSlot,
-            Qt::BlockingQueuedConnection);
     // XFilePicker
     connect(this, &KDE5FilePicker::setDefaultNameSignal, this, &KDE5FilePicker::setDefaultNameSlot,
             Qt::BlockingQueuedConnection);
@@ -148,18 +145,6 @@ KDE5FilePicker::KDE5FilePicker(QFileDialog::FileMode eMode)
 
 KDE5FilePicker::~KDE5FilePicker() { delete _extraControls; }
 
-// XExecutableDialog
-void SAL_CALL KDE5FilePicker::setTitle(const OUString& title)
-{
-    if (qApp->thread() != QThread::currentThread())
-    {
-        SolarMutexReleaser aReleaser;
-        return Q_EMIT setTitleSignal(title);
-    }
-
-    m_pFileDialog->setWindowTitle(toQString(title));
-}
-
 sal_Int16 SAL_CALL KDE5FilePicker::execute()
 {
     if (qApp->thread() != QThread::currentThread())