Fixes comments in remove node code path
Fixes comments in remove node code path

Comments were copied from the add node code path and did not match their
intent. This commit repairs the language of these comments to match their
behavior.

Signed-off-by: Taylor Vesely <2e71e1faa215a6c19636ce18fd58ddc16fff98ae@pivotal.io>

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