In order to delete a component of BOM, you can use transaction 'CS02'. CS02 is referred as Change Material BOM. It is further classified within the Logistics - General module.
But if you require deleting more than one BOM component then you can use LSMW script.
Once you have deleted the components if you want to verify the deletion and view the deleted components. You can view them under Change documents in a CS03 transaction. You need to check various tables like CDPOS, CDHDR to look for entries of deleted components.