admin: remove references to no longer existing css

jdav_web/mailer/admin.py

@@ -85,9 +85,6 @@ class MessageAdmin(CommonAdminMixin, ObjectPermissionsModelAdmin):
             form.base_fields['to_members'].initial = members
         return form
 
-    class Media:
-        css = {'all': ('admin/css/tabular_hide_original.css',)}
-
 
 def submit_message(msg, request):
     success = msg.submit()

jdav_web/material/admin.py

@@ -55,9 +55,6 @@ class MaterialAdmin(admin.ModelAdmin):
     #    models.ManyToManyField: {'widget': forms.CheckboxSelectMultiple}
     #}
 
-    #class Media:
-    #    css = {'all': ('admin/css/tabular_hide_original.css',)}
-
 
 admin.site.register(MaterialCategory, MaterialCategoryAdmin)
 admin.site.register(MaterialPart, MaterialAdmin)

jdav_web/members/admin.py

@@ -624,9 +624,6 @@ class FreizeitAdmin(CommonAdminMixin, nested_admin.NestedModelAdmin):
         else:
             return [MemberOnListInline]
 
-    class Media:
-        css = {'all': ('admin/css/tabular_hide_original.css',)}
-
     def __init__(self, *args, **kwargs):
         super(FreizeitAdmin, self).__init__(*args, **kwargs)
 
@@ -766,9 +763,6 @@ class KlettertreffAdmin(admin.ModelAdmin):
     #    ForeignKey: {'widget': apply_select2(forms.Select)}
     #}
 
-    class Media:
-        css = {'all': ('admin/css/tabular_hide_original.css',)}
-
 
 admin.site.register(Member, MemberAdmin)
 admin.site.register(MemberUnconfirmedProxy, MemberUnconfirmedAdmin)