Delete Secondary eMail addresses

I have 2 secondary email adddresses which are no longer used, since emails migrated to a different email provider.  I need to delete, or have deleted these secondary emails but cannot see a way to do it.  Can someone please show me how to do it, or do it for me.

I have carried out the 'new' login procedure and since then, the easy way to carry out this operation has been removed.

Thanks in advance