Change Data Capture Gating Roles - Identifying & Explicitly Deleting

Disable Change Data Capture for a Database

says

... However, any gating roles created by change data capture will not be removed automatically andmust be explicitly deleted.

How does one do that please?  Assuming one has 'any gating roles created by change data capture'and therefore how would one know?

This is how CDC was set up:

use <db> 
go 
exec sys.sp_cdc_enable_db 
go 
exec sys.sp_cdc_enable_table @source_schema=N'dbo', @source_name=N'BRG_CORE', @role_name=N'cdc_audit', @filegroup_name=N'CDCAUDIT'
...
go
exec sys.sp_cdc_change_job @job_type=N'cleanup', @retention=43200 -- 30*24*60
go

Martin Peter Clarke