Usage: AuditPol /remove /user[: | /allusers This command removes per-user audit policy for a specified account. Options /? ...

Usage: AuditPol /remove [/user[:|<{sid}>]]        [/allusers] 
 This command removes per-user audit policy for a specified account. 
 Options   /?               Help (context-sensitive).   /user            Specifies the SID or user name for the user for whom                    per-user audit policy is to be deleted   /allusers        Deletes per-user audit policy for all users. 
 Example:    auditpol /remove /user:{S-1-5-21-397123417-1234567}   auditpol /remove /allusers