controller.cfg.example: supress pointer warning
controller.cfg.example: supress pointer warning

buildbot doesn't like us leaving our pointers in its dictionary
so we delete the pointers after we use them

Signed-off-by: Lynn 'Cyrin' Conway <5b68ce331825ec082889a5af4f6beceed357d4a2@gmail.com>

denny820909/builder,denny820909/builder,denny820909/builder,denny820909/builder