Multiple call handlers per language

[Kelly Burkhart <kelly.burkhart@xxxxxxxxx>]

Hello, our production database has existed for quite a few years and been dumped/restored several times for hardware or postgresql upgrades.  Original version was late 7 or early 8, we're currently on 8.4.2.  I noticed on our production database I have two call handlers for plpgsql and for plpython; the following query:

select
  pn.nspname,
  pu0.usename as nspowner,
  pp.proname,
  pu1.usename as proowner,
  pp.prosrc,
  pp.probin
from
  pg_proc pp,
  pg_namespace pn,
  pg_user pu0,
  pg_user pu1
where
  pp.proname like '%call_handler%'
  and pn.oid = pp.pronamespace
  and pu0.usesysid = pn.nspowner
  and pu1.usesysid = pp.proowner
order by pp.proname;

Produces this:
  nspname   | nspowner |        proname        | proowner |        prosrc         |      probin     
------------+----------+-----------------------+----------+-----------------------+------------------
 pg_catalog | postgres | plpgsql_call_handler  | postgres | plpgsql_call_handler  | $libdir/plpgsql
 public     | postgres | plpgsql_call_handler  | postgres | plpgsql_call_handler  | $libdir/plpgsql
 pg_catalog | postgres | plpython_call_handler | postgres | plpython_call_handler | $libdir/plpython
 public     | postgres | plpython_call_handler | postgres | plpython_call_handler | $libdir/plpython
(4 rows)

When I run this on a fresh database created on a fresh cluster like this:

createdb --template=template1 krbtst
createlang plpythonu krbtst

I see this:

  nspname   | nspowner |        proname        | proowner |        prosrc         |      probin     
------------+----------+-----------------------+----------+-----------------------+------------------
 pg_catalog | postgres | plpgsql_call_handler  | postgres | plpgsql_call_handler  | $libdir/plpgsql
 pg_catalog | postgres | plpython_call_handler | postgres | plpython_call_handler | $libdir/plpython
(2 rows)

Should I worry about the extra rows in our production database?  If so how should I go about cleaning them?

-K