Removes a role from the specified user source. When altering the Gateway System User Source, the Allow User Admin setting must be enabled.
Permission Type: User Management
Client access to this scripting function is blocked to users that do not meet the role/zone requirements for the above permission type. This function is unaffected when run in the Gateway scope.
String userSource - The user source in which the role is found. Blank will use the default user source.
String role - The role to remove. The role must exist.
UIResponse - an object with lists of warnings, errors, and info about the success or failure of the deletion