[pitivi] prefs: Remove unneeded operations

[Alexandru Băluț <alexbalut src gnome org>]

commit 06ccf4f69688af32b5f95781c2abd5499952d8cb
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Thu Sep 15 14:48:51 2016 +0200

    prefs: Remove unneeded operations
    
    The item in the model does not change, what changes is how the item is
    displayed (the accelerator). No need to replace the item, it's enough to
    signal that it changed.
    
    The update of the list is done by __accel_changed_cb.
    
    Reviewed-by: Jakub Brindza <jakub brindza gmail com>
    Differential Revision: https://phabricator.freedesktop.org/D1306

 pitivi/dialogs/prefs.py |   13 +------------
 1 files changed, 1 insertions(+), 12 deletions(-)
---
diff --git a/pitivi/dialogs/prefs.py b/pitivi/dialogs/prefs.py
index 5eca2ed..b9288c6 100644
--- a/pitivi/dialogs/prefs.py
+++ b/pitivi/dialogs/prefs.py
@@ -80,12 +80,7 @@ class PreferencesDialog(Loggable):
     def __do_accel_changed_cb(self, shortcuts_manager, action_name):
         if action_name:
             index = self.action_ids[action_name]
-            title = self.list_store.get_item(index).title
-            updated_item = ModelItem(self.app, action_name, title)
-            self.list_store.remove(index)
-            self.list_store.insert(index, updated_item)
             self.list_store.emit("items-changed", index, 1, 1)
-            self.content_box.get_row_at_index(index).show()
 
     def run(self):
         """Runs the dialog."""
@@ -332,14 +327,8 @@ class PreferencesDialog(Loggable):
             row.set_header(header_box)
 
     def __reset_accelerator_cb(self, unused_button, item):
-        """Resets the accelerator and updates the displayed value to default."""
+        """Resets the accelerator to the default value."""
         self.app.shortcuts.reset_accels(item.action_name)
-        # Update the row's accelerator value.
-        for index in range(self.list_store.get_n_items()):
-            if self.list_store.get_item(index) == item:
-                self.list_store.remove(index)
-                self.list_store.insert(index, ModelItem(self.app, item.action_name,
-                                                        item.title))
 
     def _factorySettingsButtonCb(self, unused_button):
         """Resets all settings to the defaults."""