Use drop article to remove an article from a publication.
Before you drop an article, you must drop subscriptions created against it at the replicate Replication Server.
Execute drop article at the Replication Server that manages the source database. You must have create object permission.
drop article titles_art for pubs2_pub with primary at TOKYO_DS.pubs2
See Replication Server Reference Manual > Replication Server Commands > drop article.