Fix pgbench wait-until-heat-death-of-the-universe bug

The smoke-tests errand now properly waits for pgbench to exit, before
running the psql cleanup routines.

Author: jhunt

jobs/smoke-tests/templates/bin/run

@@ -59,8 +59,7 @@ done
 echo
 echo "done with tests; waiting for pgbench to finish up"
 echo
-
-wait
+wait $PGBENCH
 
 echo
 echo "pgbench exited $?"

jobs/smoke-tests/templates/sql/pgbench_cleanup.sql

@@ -14,7 +14,6 @@ DO $$
 				tablename LIKE 'pgbench\_%'
 		LOOP
 			EXECUTE 'DROP TABLE ' || quote_ident(row.schemaname) || '.' || quote_ident(row.tablename);
-			RAISE INFO 'Dropped table: %', quote_ident(row.schemaname) || '.' || quote_ident(row.tablename);
 		END LOOP;
 	END $$
 LANGUAGE plpgsql;