Remove resource_group from isolation2 schedule.
Remove resource_group from isolation2 schedule.

resource_group cases were already moved to the standalone resgroup
target, however one entrance was still left in isolation2 schedule which
caused a failure in pipeline.

This commit is a cleanup to make pipeline green.

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