After the data collector is configured, the data collector can be disabled but not removed. This means that all objects created by the data collector will remain on the instance and certain objects cannot be removed.
When the data collector is disabled, the associated SQL Server Agent jobs and system data collection sets cannot be removed. The jobs will appear as disabled, but SQL Server will not allow you to remove the jobs through T-SQL or through SSMS.
Database Administrators have no option to remove these jobs. If an environment chooses to stop using data collection in the future, they will always have to look around jobs which will never be used on the instance in the future.