- remove unnecessary F4-key handling code for downloads page

src/main/java/mediathek/gui/tabs/tab_downloads/GuiDownloads.java

@@ -142,9 +142,6 @@ public GuiDownloads(Daten aDaten, MediathekGui mediathekGui) {
 
         setupDownloadListStatusBar();
 
-        if (SystemUtils.IS_OS_WINDOWS)
-            setupF4Key(mediathekGui);
-
         setupDownloadListTable();
 
         setupDescriptionTab(tabelle, cbShowDownloadDescription, ApplicationConfiguration.DOWNLOAD_SHOW_DESCRIPTION);
@@ -184,23 +181,6 @@ public void tabelleSpeichern() {
         }
     }
 
-    /**
-     * Used on windows only...
-     * @param mediathekGui the app window.
-     */
-    private void setupF4Key(MediathekGui mediathekGui) {
-        // zum Abfangen der Win-F4 für comboboxen
-        InputMap im = cbDisplayCategories.getInputMap();
-        im.put(KeyStroke.getKeyStroke(KeyEvent.VK_F4, 0), "einstellungen");
-        ActionMap am = cbDisplayCategories.getActionMap();
-        am.put("einstellungen", new AbstractAction() {
-            @Override
-            public void actionPerformed(ActionEvent e) {
-                mediathekGui.getSettingsDialog().setVisible(true);
-            }
-        });
-    }
-
     private void updateFilmSizes(int[] rows) {
         boolean updateNeeded = false;