Deleting a Fluent Datasource

Am I a fool to think that the following code would delete a fluent datasource from great_expectations.yml ?

import great_expectations as gx

cx = gx.get_context()
datasource_name = "my_fluent_datasource"

It should but for some reason, if you have one fluent_datasource in the `great_expectations.yml then the context will not be saved.
Probably it is a bug

it works file with EphemeralDataContext

Definitely seems like a sizable bug, will report this to engineering. Thank you!