Fix vacuum analyze error.
Fix vacuum analyze error.

vacuum analyze on pg_type fails if bogus entries remain in pg_operator.
Here is a sample script to reproduce the problem.

drop table t1;
create table t1(i int);
drop function foo(t1,t1);
create function foo(t1,t1) returns bool as 'select true' language 'sql';
create operator = (
	leftarg = t1,
	rightarg = t1,
	commutator = =,
	procedure = foo
	);
drop table t1;
vacuum analyze;

0x0FFF/gpdb,rubikloud/gpdb,edespino/gpdb,lpetrov-pivotal/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,greenplum-db/gpdb,ovr/postgres-xl,greenplum-db/gpdb,foyzur/gpdb,Quikling/gpdb,kaknikhil/gpdb,jmcatamney/gpdb,rvs/gpdb,royc1/gpdb,chrishajas/gpdb,lpetrov-pivotal/gpdb,royc1/gpdb,postmind-net/postgres-xl,CraigHarris/gpdb,pavanvd/postgres-xl,edespino/gpdb,Quikling/gpdb,Chibin/gpdb,lisakowen/gpdb,jmcatamney/gpdb,yuanzhao/gpdb,kaknikhil/gpdb,zaksoup/gpdb,0x0FFF/gpdb,snaga/postgres-xl,jmcatamney/gpdb,oberstet/postgres-xl,greenplum-db/gpdb,arcivanov/postgres-xl,pavanvd/postgres-xl,zaksoup/gpdb,adam8157/gpdb,Postgres-XL/Postgres-XL,oberstet/postgres-xl,royc1/gpdb,tangp3/gpdb,atris/gpdb,janebeckman/gpdb,CraigHarris/gpdb,tpostgres-projects/tPostgres,lisakowen/gpdb,xuegang/gpdb,adam8157/gpdb,xuegang/gpdb,pavanvd/postgres-xl,ahachete/gpdb,ahachete/gpdb,CraigHarris/gpdb,xinzweb/gpdb,lintzc/gpdb,ovr/postgres-xl,CraigHarris/gpdb,tangp3/gpdb,lintzc/gpdb,kaknikhil/gpdb,kaknikhil/gpdb,tpostgres-projects/tPostgres,edespino/gpdb,randomtask1155/gpdb,50wu/gpdb,tangp3/gpdb,edespino/gpdb,janebeckman/gpdb,cjcjameson/gpdb,kaknikhil/gpdb,rubikloud/gpdb,foyzur/gpdb,jmcatamney/gpdb,postmind-net/postgres-xl,arcivanov/postgres-xl,edespino/gpdb,janebeckman/gpdb,lpetrov-pivotal/gpdb,adam8157/gpdb,edespino/gpdb,ashwinstar/gpdb,zeroae/postgres-xl,janebeckman/gpdb,lisakowen/gpdb,ovr/postgres-xl,atris/gpdb,Postgres-XL/Postgres-XL,lintzc/gpdb,greenplum-db/gpdb,50wu/gpdb,rubikloud/gpdb,pavanvd/postgres-xl,janebeckman/gpdb,Chibin/gpdb,zeroae/postgres-xl,Quikling/gpdb,Postgres-XL/Postgres-XL,0x0FFF/gpdb,zeroae/postgres-xl,50wu/gpdb,atris/gpdb,arcivanov/postgres-xl,ovr/postgres-xl,atris/gpdb,ashwinstar/gpdb,adam8157/gpdb,kmjungersen/PostgresXL,rvs/gpdb,yuanzhao/gpdb,0x0FFF/gpdb,foyzur/gpdb,atris/gpdb,xuegang/gpdb,techdragon/Postgres-XL,CraigHarris/gpdb,rubikloud/gpdb,kmjungersen/PostgresXL,tangp3/gpdb,randomtask1155/gpdb,rubikloud/gpdb,50wu/gpdb,0x0FFF/gpdb,ovr/postgres-xl,edespino/gpdb,lpetrov-pivotal/gpdb,ashwinstar/gpdb,Chibin/gpdb,chrishajas/gpdb,pavanvd/postgres-xl,yuanzhao/gpdb,lintzc/gpdb,Chibin/gpdb,jmcatamney/gpdb,tangp3/gpdb,xuegang/gpdb,royc1/gpdb,randomtask1155/gpdb,randomtask1155/gpdb,randomtask1155/gpdb,xuegang/gpdb,tangp3/gpdb,Postgres-XL/Postgres-XL,randomtask1155/gpdb,Chibin/gpdb,xinzweb/gpdb,Quikling/gpdb,xinzweb/gpdb,rvs/gpdb,chrishajas/gpdb,janebeckman/gpdb,kmjungersen/PostgresXL,lintzc/gpdb,0x0FFF/gpdb,greenplum-db/gpdb,rvs/gpdb,atris/gpdb,cjcjameson/gpdb,yuanzhao/gpdb,lisakowen/gpdb,adam8157/gpdb,snaga/postgres-xl,zaksoup/gpdb,postmind-net/postgres-xl,cjcjameson/gpdb,janebeckman/gpdb,foyzur/gpdb,oberstet/postgres-xl,jmcatamney/gpdb,xuegang/gpdb,tpostgres-projects/tPostgres,ahachete/gpdb,cjcjameson/gpdb,ashwinstar/gpdb,lintzc/gpdb,edespino/gpdb,CraigHarris/gpdb,50wu/gpdb,tangp3/gpdb,kaknikhil/gpdb,xuegang/gpdb,greenplum-db/gpdb,ahachete/gpdb,yuanzhao/gpdb,Quikling/gpdb,cjcjameson/gpdb,janebeckman/gpdb,arcivanov/postgres-xl,adam8157/gpdb,royc1/gpdb,Quikling/gpdb,cjcjameson/gpdb,lpetrov-pivotal/gpdb,yuanzhao/gpdb,cjcjameson/gpdb,oberstet/postgres-xl,xinzweb/gpdb,chrishajas/gpdb,Quikling/gpdb,ashwinstar/gpdb,rubikloud/gpdb,kmjungersen/PostgresXL,greenplum-db/gpdb,kaknikhil/gpdb,chrishajas/gpdb,cjcjameson/gpdb,lpetrov-pivotal/gpdb,50wu/gpdb,lintzc/gpdb,chrishajas/gpdb,yazun/postgres-xl,yazun/postgres-xl,yuanzhao/gpdb,CraigHarris/gpdb,zaksoup/gpdb,lpetrov-pivotal/gpdb,foyzur/gpdb,rvs/gpdb,lisakowen/gpdb,kaknikhil/gpdb,arcivanov/postgres-xl,tangp3/gpdb,atris/gpdb,chrishajas/gpdb,rubikloud/gpdb,lisakowen/gpdb,lisakowen/gpdb,foyzur/gpdb,kaknikhil/gpdb,Quikling/gpdb,techdragon/Postgres-XL,cjcjameson/gpdb,kaknikhil/gpdb,foyzur/gpdb,edespino/gpdb,CraigHarris/gpdb,zaksoup/gpdb,foyzur/gpdb,rvs/gpdb,zeroae/postgres-xl,lintzc/gpdb,lisakowen/gpdb,xinzweb/gpdb,yuanzhao/gpdb,yazun/postgres-xl,zeroae/postgres-xl,tpostgres-projects/tPostgres,Quikling/gpdb,randomtask1155/gpdb,edespino/gpdb,yazun/postgres-xl,ahachete/gpdb,Postgres-XL/Postgres-XL,Chibin/gpdb,lpetrov-pivotal/gpdb,arcivanov/postgres-xl,0x0FFF/gpdb,ashwinstar/gpdb,adam8157/gpdb,Chibin/gpdb,ahachete/gpdb,snaga/postgres-xl,randomtask1155/gpdb,janebeckman/gpdb,50wu/gpdb,Chibin/gpdb,rvs/gpdb,janebeckman/gpdb,yazun/postgres-xl,postmind-net/postgres-xl,50wu/gpdb,greenplum-db/gpdb,chrishajas/gpdb,adam8157/gpdb,tpostgres-projects/tPostgres,xinzweb/gpdb,postmind-net/postgres-xl,atris/gpdb,Chibin/gpdb,royc1/gpdb,techdragon/Postgres-XL,jmcatamney/gpdb,ahachete/gpdb,zaksoup/gpdb,zaksoup/gpdb,Chibin/gpdb,techdragon/Postgres-XL,xinzweb/gpdb,zaksoup/gpdb,rubikloud/gpdb,cjcjameson/gpdb,royc1/gpdb,snaga/postgres-xl,xinzweb/gpdb,ahachete/gpdb,rvs/gpdb,kmjungersen/PostgresXL,jmcatamney/gpdb,CraigHarris/gpdb,Quikling/gpdb,yuanzhao/gpdb,rvs/gpdb,snaga/postgres-xl,0x0FFF/gpdb,oberstet/postgres-xl,royc1/gpdb,xuegang/gpdb,techdragon/Postgres-XL,yuanzhao/gpdb,lintzc/gpdb,xuegang/gpdb,rvs/gpdb