The DELETE_USER command is used to remove an existing local user's account. The USER_LOGIN parameter must exist in the current user database. For this command to parse correctly, the command must appear within a USER_INFO command block, and USER_INFO MODE must be set to write. The user must have the administrative privilege.
Example:
<RIBCL
VERSION="2.0">
<LOGIN
USER_LOGIN="adminname"
PASSWORD=
"password">
<USER_INFO MODE="write">
<DELETE_USER
USER_LOGIN="username"/>
</USER_INFO>
</LOGIN>
</RIBCL>