Upgrading from 9.6 to 12 and running into cast issues with pg_catalog.text()

I have some implicit casts such as real to text where they depend on the
function pg_catalog.text(real) which seems to no longer exist in 12. The
pg_upgrade failure says:

Command was: CREATE CAST (real AS "text") WITH FUNCTION
"pg_catalog"."text"(real) AS IMPLICIT;

Should I just DROP CAST (real as text) or is there a better solution?

--
Wells Oliver
wells(dot)oliver(at)gmail(dot)com <wellsoliver(at)gmail(dot)com>