exclude activities from EmailTemplate admin

biz/admin.py

@@ -42,6 +42,7 @@ class EntityAdmin(SyncedObjectAdmin):
 class EmailTemplateAdmin(SyncedObjectAdmin):
     list_display = ('name', 'subject', 'body')
     search_fields = ('name', 'subject')
+    exclude = ('data_access_ids', 'activities',)
 
 def contacted_by_sms(modeladmin, request, queryset):
     create_default_activity_for_prospect(modeladmin, request, queryset, ActivityType.SMS, Status.CONTACTED, None)