pgsql: Remove duplicated wait for subscription sync from 007_ddl.pl.

Remove duplicated wait for subscription sync from 007_ddl.pl. An oversight in 8f2e2bbf14. Author: Masahiko Sawada Reviewed by: Amit Kapila Backpatch-through: 15, where it was introduced Discussion: https://postgr.es/m/cad21aoc-fvakakha4t1urupwl8xbacwrepeetvshvy80f6w...@mail.gmail.com Branch ---

pgsql: Remove duplicated wait for subscription sync from 007_ddl.pl.

Remove duplicated wait for subscription sync from 007_ddl.pl. An oversight in 8f2e2bbf14. Author: Masahiko Sawada Reviewed by: Amit Kapila Backpatch-through: 15, where it was introduced Discussion: https://postgr.es/m/cad21aoc-fvakakha4t1urupwl8xbacwrepeetvshvy80f6w...@mail.gmail.com Branch ---