Remove comment that's not in the upstream.
Remove comment that's not in the upstream.

Perhaps it's slightly useful, but prefer to stay in sync with upstream.

yuanzhao/gpdb,xinzweb/gpdb,yuanzhao/gpdb,greenplum-db/gpdb,kaknikhil/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,edespino/gpdb,janebeckman/gpdb,adam8157/gpdb,ashwinstar/gpdb,edespino/gpdb,edespino/gpdb,Chibin/gpdb,lisakowen/gpdb,janebeckman/gpdb,Chibin/gpdb,adam8157/gpdb,jmcatamney/gpdb,xinzweb/gpdb,Chibin/gpdb,cjcjameson/gpdb,ashwinstar/gpdb,kaknikhil/gpdb,janebeckman/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,edespino/gpdb,janebeckman/gpdb,kaknikhil/gpdb,yuanzhao/gpdb,jmcatamney/gpdb,kaknikhil/gpdb,yuanzhao/gpdb,edespino/gpdb,janebeckman/gpdb,edespino/gpdb,janebeckman/gpdb,adam8157/gpdb,janebeckman/gpdb,edespino/gpdb,greenplum-db/gpdb,greenplum-db/gpdb,Chibin/gpdb,janebeckman/gpdb,kaknikhil/gpdb,cjcjameson/gpdb,yuanzhao/gpdb,adam8157/gpdb,lisakowen/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,Chibin/gpdb,lisakowen/gpdb,kaknikhil/gpdb,edespino/gpdb,lisakowen/gpdb,50wu/gpdb,cjcjameson/gpdb,50wu/gpdb,kaknikhil/gpdb,cjcjameson/gpdb,janebeckman/gpdb,Chibin/gpdb,lisakowen/gpdb,edespino/gpdb,50wu/gpdb,Chibin/gpdb,adam8157/gpdb,greenplum-db/gpdb,cjcjameson/gpdb,Chibin/gpdb,50wu/gpdb,greenplum-db/gpdb,xinzweb/gpdb,edespino/gpdb,adam8157/gpdb,ashwinstar/gpdb,cjcjameson/gpdb,jmcatamney/gpdb,kaknikhil/gpdb,50wu/gpdb,xinzweb/gpdb,jmcatamney/gpdb,xinzweb/gpdb,yuanzhao/gpdb,jmcatamney/gpdb,lisakowen/gpdb,lisakowen/gpdb,yuanzhao/gpdb,xinzweb/gpdb,kaknikhil/gpdb,50wu/gpdb,greenplum-db/gpdb,yuanzhao/gpdb,janebeckman/gpdb,yuanzhao/gpdb,xinzweb/gpdb,xinzweb/gpdb,lisakowen/gpdb,Chibin/gpdb,adam8157/gpdb,cjcjameson/gpdb,jmcatamney/gpdb,adam8157/gpdb,ashwinstar/gpdb,50wu/gpdb,50wu/gpdb,cjcjameson/gpdb,ashwinstar/gpdb,kaknikhil/gpdb,cjcjameson/gpdb,yuanzhao/gpdb,greenplum-db/gpdb,cjcjameson/gpdb,Chibin/gpdb