diff -r 51c160677afe -r 39cf9e55ada8 cubicweb/misc/migration/3.13.3_Any.py
--- a/cubicweb/misc/migration/3.13.3_Any.py	Wed Oct 05 15:30:10 2016 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,2 +0,0 @@
-drop_relation_definition('CWSourceSchemaConfig', 'cw_schema', 'CWAttribute')
-sync_schema_props_perms('cw_schema')