Remove obsolete mock calls from gpstart test.
Remove obsolete mock calls from gpstart test.

These functions don't exist anymore.

50wu/gpdb,greenplum-db/gpdb,adam8157/gpdb,greenplum-db/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,lisakowen/gpdb,greenplum-db/gpdb,greenplum-db/gpdb,xinzweb/gpdb,lisakowen/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,ashwinstar/gpdb,jmcatamney/gpdb,xinzweb/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,Chibin/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,Chibin/gpdb,lisakowen/gpdb,ashwinstar/gpdb,lisakowen/gpdb,adam8157/gpdb,50wu/gpdb,Chibin/gpdb,ashwinstar/gpdb,50wu/gpdb,adam8157/gpdb,adam8157/gpdb,Chibin/gpdb,ashwinstar/gpdb,xinzweb/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,Chibin/gpdb,lisakowen/gpdb,Chibin/gpdb,jmcatamney/gpdb,adam8157/gpdb,lisakowen/gpdb,greenplum-db/gpdb,xinzweb/gpdb,adam8157/gpdb,Chibin/gpdb,adam8157/gpdb,xinzweb/gpdb,50wu/gpdb,xinzweb/gpdb,lisakowen/gpdb,50wu/gpdb,Chibin/gpdb,adam8157/gpdb,50wu/gpdb,lisakowen/gpdb,Chibin/gpdb,xinzweb/gpdb,greenplum-db/gpdb,xinzweb/gpdb,Chibin/gpdb,50wu/gpdb,50wu/gpdb