[meld] preferences: Fix bad super() calls and remove init_template calls

[Kai Willadsen <kaiw src gnome org>]

commit 85a3113f947f3faf876fde78ab9cf51575065c01
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sat Aug 31 08:47:17 2019 +1000

    preferences: Fix bad super() calls and remove init_template calls
    
    `init_template()` was a backwards compatibility hack that has some
    issues with being called manually in current pygobject.

 meld/preferences.py | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)
---
diff --git a/meld/preferences.py b/meld/preferences.py
index 14d3b1be..ee6e3411 100644
--- a/meld/preferences.py
+++ b/meld/preferences.py
@@ -60,8 +60,7 @@ class FilterList(Gtk.Box, EditableListWidget):
     )
 
     def __init__(self, **kwargs):
-        super().__init__(self, **kwargs)
-        FilterList.init_template(self)
+        super().__init__(**kwargs)
         self.model = self.treeview.get_model()
 
         self.pattern_column.set_cell_data_func(
@@ -150,8 +149,7 @@ class ColumnList(Gtk.VBox, EditableListWidget):
     )
 
     def __init__(self, **kwargs):
-        super().__init__(self, **kwargs)
-        ColumnList.init_template(self)
+        super().__init__(**kwargs)
         self.model = self.treeview.get_model()
 
         # Unwrap the variant
@@ -291,7 +289,6 @@ class PreferencesDialog(Gtk.Dialog):
 
     def __init__(self, **kwargs):
         super().__init__(**kwargs)
-        self.init_template()
 
         bindings = [
             ('use-system-font', self.checkbutton_default_font, 'active'),