databases/postgresql-plv8js: remove pgsql version

Remove version restriction for pgsql, as 3.0.0 builds fine with any
version.

Reported by: Felix Palmen <felix@palmen-it.de>
PR: 259262
Sponsored by: Postgres Professional

(cherry picked from commit fb3f11e5db16d91932828a877a2238f0e482ece3)