Fix DEADCODE coverity issue in cdbresynchronizechangetracking.c
Fix DEADCODE coverity issue in cdbresynchronizechangetracking.c

CID 170750: Logically dead code. In
ChangeTracking_GetLastChangeTrackingLogEndLoc() code can never be reached
because of a logical contradiction, hence removing the same.

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