Remove superfluous index
Remove superfluous index

PRIMARY KEY implies unique, which implies the index:

> There's no need to manually create indexes on unique columns; doing so would just duplicate the automatically-created index.

from https://www.postgresql.org/docs/current/static/indexes-unique.html

suhlig/HDM-Haushaltsbuch,suhlig/HDM-Haushaltsbuch,suhlig/HDM-Haushaltsbuch