Remove event trigger from object_address test

It is causing trouble when run in parallel mode, because dropping the
function other sessions are running concurrently causes them to fail due
to inability to find the function.

Per buildfarm, as noted by Tom Lane.

src/test/regress/expected/object_address.out

@@ -28,8 +28,6 @@ CREATE DOMAIN addr_nsp.gendomain AS int4 CONSTRAINT domconstr CHECK (value > 0);
 CREATE FUNCTION addr_nsp.trig() RETURNS TRIGGER LANGUAGE plpgsql AS $$ BEGIN END; $$;
 CREATE TRIGGER t BEFORE INSERT ON addr_nsp.gentable FOR EACH ROW EXECUTE PROCEDURE addr_nsp.trig();
 CREATE POLICY genpol ON addr_nsp.gentable;
-CREATE FUNCTION addr_nsp.etrig() RETURNS EVENT_TRIGGER LANGUAGE plpgsql AS $$ BEGIN END; $$;
-CREATE EVENT TRIGGER evttrig ON ddl_command_end EXECUTE PROCEDURE addr_nsp.etrig();
 -- test some error cases
 SELECT pg_get_object_address('stone', '{}', '{}');
 ERROR:  unrecognized object type "stone"
@@ -338,7 +336,7 @@ WITH objects (type, name, args) AS (VALUES
 				('server', '{addr_fserv}', '{}'),
 				-- user mapping
 				-- extension
-				('event trigger', '{evttrig}', '{}'),
+				-- event trigger
 				('policy', '{addr_nsp, gentable, genpol}', '{}')
         )
 SELECT (pg_identify_object(classid, objid, subobjid)).*
@@ -377,12 +375,11 @@ ORDER BY classid, objid;
  operator family           | pg_catalog | integer_ops       | pg_catalog.integer_ops for btree
  policy                    |            |                   | genpol on addr_nsp.gentable
  collation                 | pg_catalog | "default"         | pg_catalog."default"
- event trigger             |            | evttrig           | evttrig
  text search dictionary    | addr_nsp   | addr_ts_dict      | addr_nsp.addr_ts_dict
  text search parser        | addr_nsp   | addr_ts_prs       | addr_nsp.addr_ts_prs
  text search configuration | addr_nsp   | addr_ts_conf      | addr_nsp.addr_ts_conf
  text search template      | addr_nsp   | addr_ts_temp      | addr_nsp.addr_ts_temp
-(36 rows)
+(35 rows)
 
 ---
 --- Cleanup resources

src/test/regress/sql/object_address.sql

@@ -33,9 +33,6 @@ CREATE FUNCTION addr_nsp.trig() RETURNS TRIGGER LANGUAGE plpgsql AS $$ BEGIN END
 CREATE TRIGGER t BEFORE INSERT ON addr_nsp.gentable FOR EACH ROW EXECUTE PROCEDURE addr_nsp.trig();
 CREATE POLICY genpol ON addr_nsp.gentable;
 
-CREATE FUNCTION addr_nsp.etrig() RETURNS EVENT_TRIGGER LANGUAGE plpgsql AS $$ BEGIN END; $$;
-CREATE EVENT TRIGGER evttrig ON ddl_command_end EXECUTE PROCEDURE addr_nsp.etrig();
-
 -- test some error cases
 SELECT pg_get_object_address('stone', '{}', '{}');
 SELECT pg_get_object_address('table', '{}', '{}');
@@ -159,7 +156,7 @@ WITH objects (type, name, args) AS (VALUES
 				('server', '{addr_fserv}', '{}'),
 				-- user mapping
 				-- extension
-				('event trigger', '{evttrig}', '{}'),
+				-- event trigger
 				('policy', '{addr_nsp, gentable, genpol}', '{}')
         )
 SELECT (pg_identify_object(classid, objid, subobjid)).*