Remove useless DLLIMPORT (only needed in header files).
Remove useless DLLIMPORT (only needed in header files).

tangp3/gpdb,ashwinstar/gpdb,tpostgres-projects/tPostgres,xuegang/gpdb,oberstet/postgres-xl,lintzc/gpdb,randomtask1155/gpdb,xinzweb/gpdb,greenplum-db/gpdb,xuegang/gpdb,kmjungersen/PostgresXL,ahachete/gpdb,zeroae/postgres-xl,techdragon/Postgres-XL,rubikloud/gpdb,tangp3/gpdb,postmind-net/postgres-xl,lpetrov-pivotal/gpdb,randomtask1155/gpdb,arcivanov/postgres-xl,oberstet/postgres-xl,edespino/gpdb,yuanzhao/gpdb,randomtask1155/gpdb,xinzweb/gpdb,CraigHarris/gpdb,kaknikhil/gpdb,atris/gpdb,adam8157/gpdb,postmind-net/postgres-xl,rubikloud/gpdb,xinzweb/gpdb,rvs/gpdb,chrishajas/gpdb,ahachete/gpdb,adam8157/gpdb,atris/gpdb,50wu/gpdb,yuanzhao/gpdb,Chibin/gpdb,edespino/gpdb,tpostgres-projects/tPostgres,atris/gpdb,snaga/postgres-xl,edespino/gpdb,oberstet/postgres-xl,janebeckman/gpdb,ahachete/gpdb,zeroae/postgres-xl,techdragon/Postgres-XL,adam8157/gpdb,tangp3/gpdb,jmcatamney/gpdb,Postgres-XL/Postgres-XL,0x0FFF/gpdb,lintzc/gpdb,Chibin/gpdb,ahachete/gpdb,rubikloud/gpdb,ovr/postgres-xl,cjcjameson/gpdb,ashwinstar/gpdb,ahachete/gpdb,lintzc/gpdb,yuanzhao/gpdb,arcivanov/postgres-xl,Postgres-XL/Postgres-XL,greenplum-db/gpdb,0x0FFF/gpdb,Quikling/gpdb,royc1/gpdb,kaknikhil/gpdb,rubikloud/gpdb,arcivanov/postgres-xl,janebeckman/gpdb,50wu/gpdb,janebeckman/gpdb,Postgres-XL/Postgres-XL,chrishajas/gpdb,ashwinstar/gpdb,tpostgres-projects/tPostgres,jmcatamney/gpdb,kaknikhil/gpdb,ahachete/gpdb,atris/gpdb,foyzur/gpdb,cjcjameson/gpdb,yazun/postgres-xl,rvs/gpdb,rvs/gpdb,lintzc/gpdb,kmjungersen/PostgresXL,atris/gpdb,Quikling/gpdb,zaksoup/gpdb,lisakowen/gpdb,jmcatamney/gpdb,royc1/gpdb,cjcjameson/gpdb,cjcjameson/gpdb,foyzur/gpdb,lpetrov-pivotal/gpdb,jmcatamney/gpdb,greenplum-db/gpdb,Postgres-XL/Postgres-XL,kmjungersen/PostgresXL,yuanzhao/gpdb,zaksoup/gpdb,arcivanov/postgres-xl,royc1/gpdb,foyzur/gpdb,lisakowen/gpdb,Quikling/gpdb,cjcjameson/gpdb,Chibin/gpdb,royc1/gpdb,atris/gpdb,lpetrov-pivotal/gpdb,atris/gpdb,yuanzhao/gpdb,snaga/postgres-xl,rvs/gpdb,lintzc/gpdb,Chibin/gpdb,pavanvd/postgres-xl,lintzc/gpdb,rvs/gpdb,50wu/gpdb,jmcatamney/gpdb,chrishajas/gpdb,lpetrov-pivotal/gpdb,ovr/postgres-xl,xuegang/gpdb,chrishajas/gpdb,xuegang/gpdb,pavanvd/postgres-xl,Quikling/gpdb,ashwinstar/gpdb,kaknikhil/gpdb,xinzweb/gpdb,ovr/postgres-xl,chrishajas/gpdb,tangp3/gpdb,chrishajas/gpdb,lisakowen/gpdb,adam8157/gpdb,greenplum-db/gpdb,xuegang/gpdb,yuanzhao/gpdb,Quikling/gpdb,snaga/postgres-xl,0x0FFF/gpdb,adam8157/gpdb,kaknikhil/gpdb,foyzur/gpdb,zaksoup/gpdb,janebeckman/gpdb,adam8157/gpdb,rvs/gpdb,Chibin/gpdb,yazun/postgres-xl,ashwinstar/gpdb,rubikloud/gpdb,Quikling/gpdb,janebeckman/gpdb,tangp3/gpdb,CraigHarris/gpdb,CraigHarris/gpdb,edespino/gpdb,zaksoup/gpdb,rvs/gpdb,lpetrov-pivotal/gpdb,zeroae/postgres-xl,foyzur/gpdb,greenplum-db/gpdb,lintzc/gpdb,tpostgres-projects/tPostgres,xinzweb/gpdb,lintzc/gpdb,Postgres-XL/Postgres-XL,xinzweb/gpdb,lpetrov-pivotal/gpdb,edespino/gpdb,royc1/gpdb,royc1/gpdb,techdragon/Postgres-XL,Chibin/gpdb,zeroae/postgres-xl,randomtask1155/gpdb,cjcjameson/gpdb,lisakowen/gpdb,atris/gpdb,ashwinstar/gpdb,Chibin/gpdb,yuanzhao/gpdb,snaga/postgres-xl,kaknikhil/gpdb,randomtask1155/gpdb,postmind-net/postgres-xl,kmjungersen/PostgresXL,randomtask1155/gpdb,lintzc/gpdb,lpetrov-pivotal/gpdb,randomtask1155/gpdb,adam8157/gpdb,cjcjameson/gpdb,Quikling/gpdb,rubikloud/gpdb,kaknikhil/gpdb,yuanzhao/gpdb,50wu/gpdb,yazun/postgres-xl,jmcatamney/gpdb,50wu/gpdb,janebeckman/gpdb,CraigHarris/gpdb,foyzur/gpdb,xinzweb/gpdb,lisakowen/gpdb,zaksoup/gpdb,arcivanov/postgres-xl,randomtask1155/gpdb,50wu/gpdb,edespino/gpdb,snaga/postgres-xl,kaknikhil/gpdb,0x0FFF/gpdb,xuegang/gpdb,jmcatamney/gpdb,pavanvd/postgres-xl,ashwinstar/gpdb,pavanvd/postgres-xl,techdragon/Postgres-XL,adam8157/gpdb,xuegang/gpdb,zaksoup/gpdb,cjcjameson/gpdb,postmind-net/postgres-xl,zaksoup/gpdb,greenplum-db/gpdb,CraigHarris/gpdb,edespino/gpdb,kaknikhil/gpdb,foyzur/gpdb,edespino/gpdb,50wu/gpdb,janebeckman/gpdb,tpostgres-projects/tPostgres,janebeckman/gpdb,zaksoup/gpdb,chrishajas/gpdb,Chibin/gpdb,rvs/gpdb,rvs/gpdb,lpetrov-pivotal/gpdb,edespino/gpdb,foyzur/gpdb,edespino/gpdb,Quikling/gpdb,royc1/gpdb,lisakowen/gpdb,oberstet/postgres-xl,xinzweb/gpdb,zeroae/postgres-xl,rubikloud/gpdb,greenplum-db/gpdb,yazun/postgres-xl,CraigHarris/gpdb,ahachete/gpdb,0x0FFF/gpdb,0x0FFF/gpdb,0x0FFF/gpdb,janebeckman/gpdb,ashwinstar/gpdb,arcivanov/postgres-xl,xuegang/gpdb,cjcjameson/gpdb,cjcjameson/gpdb,kmjungersen/PostgresXL,oberstet/postgres-xl,royc1/gpdb,tangp3/gpdb,yuanzhao/gpdb,lisakowen/gpdb,kaknikhil/gpdb,rvs/gpdb,ahachete/gpdb,postmind-net/postgres-xl,greenplum-db/gpdb,yazun/postgres-xl,CraigHarris/gpdb,jmcatamney/gpdb,ovr/postgres-xl,0x0FFF/gpdb,lisakowen/gpdb,CraigHarris/gpdb,Quikling/gpdb,50wu/gpdb,yuanzhao/gpdb,rubikloud/gpdb,Chibin/gpdb,tangp3/gpdb,Chibin/gpdb,CraigHarris/gpdb,chrishajas/gpdb,xuegang/gpdb,tangp3/gpdb,janebeckman/gpdb,techdragon/Postgres-XL,Quikling/gpdb,pavanvd/postgres-xl,ovr/postgres-xl