If you want to remove any username from SAP logon screen for any reason then you can do this easily with following trick…

For an example ;

There is a username  “sapbasisinfo” and already entered our USER area like below so we want to delete this saved user entry

Then ;

- Hit Space

- Press Down Arrow and select the username which you want to delete

- Press DELETE button

Now you can see , there is no user entry such as “sapbasisinfo”

Thats it…