Monitor server: An entry for the primary server in table msdb.dbo.log_shipping_primaries.
The jobs are there because there are rows in the log_shipping_primaries table. In all failure cases of the setup Wizard the problem is that the log_shipping_primaries and log_shipping_monitor tables are not always cleaned up.
After you run the Maintenance Wizard and it fails to create the Log Shipping setup, you must manually clean up the tables before you run the wizard again. Depending on where the failure is, you must run some of the stored procedures to delete the entry.
You may have to run the following stored procedures to clean up log shipping entries and allow the wizard to be re-run: