Remove duplicate code in DefineOpFamily().
Remove duplicate code in DefineOpFamily().

The code was probably meant to be this way all along, since the subroutine
CreateOpFamily previously had only one caller.  But it wasn't.

KaiGai Kohei

ovr/postgres-xl,ashwinstar/gpdb,arcivanov/postgres-xl,ashwinstar/gpdb,greenplum-db/gpdb,Postgres-XL/Postgres-XL,xinzweb/gpdb,50wu/gpdb,50wu/gpdb,50wu/gpdb,greenplum-db/gpdb,Postgres-XL/Postgres-XL,adam8157/gpdb,postmind-net/postgres-xl,jmcatamney/gpdb,techdragon/Postgres-XL,greenplum-db/gpdb,jmcatamney/gpdb,ovr/postgres-xl,pavanvd/postgres-xl,yazun/postgres-xl,50wu/gpdb,lisakowen/gpdb,oberstet/postgres-xl,yazun/postgres-xl,tpostgres-projects/tPostgres,kmjungersen/PostgresXL,ashwinstar/gpdb,ashwinstar/gpdb,xinzweb/gpdb,adam8157/gpdb,greenplum-db/gpdb,lisakowen/gpdb,xinzweb/gpdb,tpostgres-projects/tPostgres,yazun/postgres-xl,techdragon/Postgres-XL,kmjungersen/PostgresXL,pavanvd/postgres-xl,tpostgres-projects/tPostgres,oberstet/postgres-xl,adam8157/gpdb,xinzweb/gpdb,xinzweb/gpdb,adam8157/gpdb,adam8157/gpdb,jmcatamney/gpdb,50wu/gpdb,lisakowen/gpdb,pavanvd/postgres-xl,greenplum-db/gpdb,adam8157/gpdb,Postgres-XL/Postgres-XL,ashwinstar/gpdb,snaga/postgres-xl,xinzweb/gpdb,xinzweb/gpdb,ashwinstar/gpdb,jmcatamney/gpdb,oberstet/postgres-xl,postmind-net/postgres-xl,zeroae/postgres-xl,greenplum-db/gpdb,kmjungersen/PostgresXL,greenplum-db/gpdb,50wu/gpdb,lisakowen/gpdb,snaga/postgres-xl,oberstet/postgres-xl,zeroae/postgres-xl,kmjungersen/PostgresXL,arcivanov/postgres-xl,lisakowen/gpdb,xinzweb/gpdb,jmcatamney/gpdb,tpostgres-projects/tPostgres,zeroae/postgres-xl,jmcatamney/gpdb,arcivanov/postgres-xl,techdragon/Postgres-XL,techdragon/Postgres-XL,Postgres-XL/Postgres-XL,snaga/postgres-xl,ovr/postgres-xl,lisakowen/gpdb,50wu/gpdb,yazun/postgres-xl,tpostgres-projects/tPostgres,jmcatamney/gpdb,yazun/postgres-xl,techdragon/Postgres-XL,snaga/postgres-xl,arcivanov/postgres-xl,arcivanov/postgres-xl,jmcatamney/gpdb,adam8157/gpdb,pavanvd/postgres-xl,oberstet/postgres-xl,arcivanov/postgres-xl,ovr/postgres-xl,lisakowen/gpdb,pavanvd/postgres-xl,Postgres-XL/Postgres-XL,adam8157/gpdb,kmjungersen/PostgresXL,postmind-net/postgres-xl,postmind-net/postgres-xl,zeroae/postgres-xl,ashwinstar/gpdb,50wu/gpdb,zeroae/postgres-xl,ovr/postgres-xl,ashwinstar/gpdb,postmind-net/postgres-xl,snaga/postgres-xl,greenplum-db/gpdb,lisakowen/gpdb