Drop KDE5FilePicker::disposing

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

Change-Id: I91069385541a519f006d10b0580104f14beb551e
Reviewed-on: https://gerrit.libreoffice.org/68048
Tested-by: Jenkins
Reviewed-by: Katarina Behrens <Katarina.Behrens@cib.de>
(cherry picked from commit 1542aad2)
Reviewed-on: https://gerrit.libreoffice.org/72645

vcl/unx/kde5/KDE5FilePicker.hxx

@@ -119,10 +119,6 @@ public:
     // XCancellable
     virtual void SAL_CALL cancel() override;
 
-    // XEventListener
-    virtual void disposing(const css::lang::EventObject& rEvent);
-    using cppu::WeakComponentImplHelperBase::disposing;
-
     // XServiceInfo
     virtual OUString SAL_CALL getImplementationName() override;
     virtual sal_Bool SAL_CALL supportsService(const OUString& rServiceName) override;

vcl/unx/kde5/KDE5FilePicker2.cxx

@@ -19,7 +19,6 @@
 
 #include "KDE5FilePicker.hxx"
 
-#include <com/sun/star/lang/DisposedException.hpp>
 #include <com/sun/star/lang/XMultiServiceFactory.hpp>
 #include <com/sun/star/lang/IllegalArgumentException.hpp>
 #include <cppuhelper/interfacecontainer.h>
@@ -678,17 +677,6 @@ void SAL_CALL KDE5FilePicker::cancel()
     // TODO
 }
 
-// XEventListener
-void KDE5FilePicker::disposing(const lang::EventObject& rEvent)
-{
-    uno::Reference<XFilePickerListener> xFilePickerListener(rEvent.Source, uno::UNO_QUERY);
-
-    if (xFilePickerListener.is())
-    {
-        removeFilePickerListener(xFilePickerListener);
-    }
-}
-
 // XServiceInfo
 OUString SAL_CALL KDE5FilePicker::getImplementationName()
 {