Customize and submit the following delete jobs in your component
PDSE to delete WebSphere MQ and DB2 definitions:
Delete jobs
Description
BIPDLBK
Delete component including WebSphere MQ broker
queues and channels and rows in the DB2 database
BIPDLDB
Drop the broker DB2 database,
storage group and table spaces.
Note:
Not all files are deleted from the component directory in the file system.
When the BIPDLDB job drops the broker DB2 database,
it also deletes any Image Copy references to itself that you currently have.
If you restore the broker in future you need to reinstate the Image Copy references.