[gnome-tweaks] settings: Drop override settings support

[Jeremy Bicha <jbicha src gnome org>]

commit 000396a7ac3f03b0cea1c7897819634edd9f2dd4
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Jul 18 17:09:05 2018 +0200

    settings: Drop override settings support
    
    Now that session-specific overrides landed in GIO, it is no longer
    necessary to explicitly handle different defaults in GNOME and Classic.
    
    https://gitlab.gnome.org/GNOME/gnome-tweaks/merge_requests/9

 gtweak/widgets.py | 23 -----------------------
 1 file changed, 23 deletions(-)
---
diff --git a/gtweak/widgets.py b/gtweak/widgets.py
index 3d48a51..f1d607c 100644
--- a/gtweak/widgets.py
+++ b/gtweak/widgets.py
@@ -116,32 +116,9 @@ def build_tight_button(stock_id):
     button.get_style_context().add_provider(provider, 600)
     return button
 
-def adjust_schema_for_overrides(originalSchema, key, options):
-    if (_shell is None):
-        return originalSchema
-
-    if (_shell.mode == 'user'):
-        overridesSchema = "org.gnome.shell.overrides"
-        overridesFile = "org.gnome.shell.gschema.xml"
-    elif (_shell.mode == 'classic'):
-        overridesSchema = "org.gnome.shell.extensions.classic-overrides"
-        overridesFile = None
-    else:
-        return originalSchema
-
-    try:
-        if (key in GSettingsSetting(overridesSchema, schema_filename=overridesFile).list_keys()):
-            options['schema_filename'] = overridesFile
-            return overridesSchema
-    except GSettingsMissingError as e:
-        logging.info("GSetting missing %s", e)
-
-    return originalSchema
-
 
 class _GSettingsTweak(Tweak):
     def __init__(self, name, schema_name, key_name, **options):
-        schema_name = adjust_schema_for_overrides(schema_name, key_name, options)
         self.schema_name = schema_name
         self.key_name = key_name
         self._extra_info = None