Before you start:
Delete a broker using the command line on the system where the
broker component is installed. On Windows, you
can also use the Command Assistant to complete this task.
On Windows, UNIX systems, and Linux, you must set up
your command-line environment before deleting a broker, by running the product
profile or console; refer to Setting up a command environment.
You can remove the broker from the broker topology using the workbench, but the physical broker will not be deleted until the broker is physically deleted from the command line.
Follow the link for the appropriate platform.