When you delete a source, the Replicator Manager removes the selected listing from the diagram in the left pane of the main window and permanently deletes any subscriptions that use the source. If any of the subscriptions for the selected source are also members of a replication group, the subscriptions are also deleted from the group(s). You cannot delete a source if a Replicator Service has an active connection to it.
Select a source from the Sources folder of the Replicator Manager window.
Right-click and select the Delete command.