Useless "Replica Identity: NOTHING" noise from psql \d

In HEAD:

regression=# \d pg_depend  Table "pg_catalog.pg_depend"  Column    |  Type   | Modifiers 
-------------+---------+-----------classid     | oid     | not nullobjid       | oid     | not nullobjsubid    |
integer| not nullrefclassid  | oid     | not nullrefobjid    | oid     | not nullrefobjsubid | integer | not
nulldeptype    | "char"  | not null
 
Indexes:   "pg_depend_depender_index" btree (classid, objid, objsubid)   "pg_depend_reference_index" btree (refclassid,
refobjid,refobjsubid)
 
Replica Identity: NOTHING

Where did that last line come from, and who thinks it's so important
that it should appear by default?  It seems absolutely content-free
even if I were using whatever feature it refers to, since it is
(I presume) the default state.

Please either suppress this entirely or at least condition it on \d+.
        regards, tom lane