Minor fix

Author: Federico Ceratto

af/oometa/022-create-fastpath-btree-idx.rollback.sql

@@ -1,5 +1,5 @@
 BEGIN;
 SELECT
-    _v.unregister_patch ('021-counters-table');
+    _v.unregister_patch ('022-create-fastpath-btree-idx');
 DROP INDEX measurement_start_time_btree_idx
 COMMIT;