Previous code cleanup was for bufpage.c, not bufmgr.c.
Previous code cleanup was for bufpage.c, not bufmgr.c.

This cleanup just cleans up a comment.

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