[gnome-tweaks] Revert "appearance: Add Sound translatable string as placeholder"

[Jeremy Bicha <jbicha src gnome org>]

commit 0342e84d50c47ec2080378ab190ce98c67b79b3f
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Wed Aug 1 10:52:33 2018 -0400

    Revert "appearance: Add Sound translatable string as placeholder"
    
    This reverts commit 7648509ae3b0c4c720069955bfe11f174ef8f6a0.
    
    Not necessary since we're adding the feature now.

 gtweak/tweaks/tweak_group_appearance.py | 5 -----
 1 file changed, 5 deletions(-)
---
diff --git a/gtweak/tweaks/tweak_group_appearance.py b/gtweak/tweaks/tweak_group_appearance.py
index ff0b98b..fff578c 100644
--- a/gtweak/tweaks/tweak_group_appearance.py
+++ b/gtweak/tweaks/tweak_group_appearance.py
@@ -23,11 +23,6 @@ from gtweak.widgets import ListBoxTweakGroup, GSettingsSwitchTweak, GSettingsCom
 _shell = GnomeShellFactory().get_shell()
 _shell_loaded = _shell is not None
 
-# This is a placeholder for a Sound Theme dropdown box for the Appearance panel.
-# This will allow us to add the dropdown box later without needing a new
-# translatable string.
-sound_label = _("Sound")
-
 class GtkThemeSwitcher(GSettingsComboTweak):
     def __init__(self, **options):
         GSettingsComboTweak.__init__(self,