pgsql: Clean up role created in new subscription test. - Mailing list pgsql-committers

Clean up role created in new subscription test.

This oversight broke repeated runs of "make installcheck".

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/e9d202a1499d6a70e80d080fcdba07fe6707845d

Modified Files
--------------
src/test/regress/expected/subscription.out | 1 +
src/test/regress/sql/subscription.sql      | 1 +
2 files changed, 2 insertions(+)