docker_dev_start.py: Remove --dev=xml, harmful

Makes view translations fail in Odoo 11.

docker_dev_start.py

@@ -652,7 +652,7 @@
     if dev:
         if odoo_type in ('odoo11', 'odoo10'):
             # ipdb should not be run if not interactive
-            arg.append('--dev=xml,reload,ipdb')
+            arg.append('--dev=reload,ipdb')
         if odoo_type in ('odoo8',):
             arg.append('--auto-reload')
     if odoo_help: