Fix admin page of contributions.

Was broken since connect_type field was removed.

wifiwithme/apps/contribmap/admin.py

@@ -26,10 +26,6 @@ class ContribAdmin(admin.ModelAdmin):
                 ('floor', 'floor_total'),
                 'orientations', 'roof']
         }],
-        ['Raccordement au réseau', {
-            'fields': ['connect_type'],
-            'classes': ['collapse'],
-        }],
         ['Partage de connexion', {
             'fields': ['access_type'],
             'classes': ['collapse'],