Description of problem:

• Need to update/fix steps to remove packages using satellite-maintain . We no longer have "remove" option for "satellite-maintain packages" command, but this step exist in the documentation

Reference documentation: https://docs.redhat.com/en/documentation/red_hat_satellite/6.18/html/administering_red_hat_satellite/migrating_from_internal_databases_to_external_databases_admin#migrating-to-external-databases_admin

Section: 4.3. Migrating to external databases

Step: 6. Remove the PostgreSQL package on Satellite Server:

1. satellite-maintain packages remove postgresql-server

Actual behavior:
Customers are facing error while following this step:

[root@msp-satellite ~]# satellite-maintain packages remove postgresql-server
ERROR: No such sub-command 'remove'

See: 'satellite-maintain packages --help'