Sure,
You'll have to use the point-values api for the deletion though. ([mango_domain]/swagger-ui.html#/point-value-rest-controller/deletePointValuesUsingDELETE_1)
Refer to my http builder forum post here for using the http builder.
Let's call your context variable: pt
I'm afraid I do not know if there are any other means at this time to delete point values without the API.
Fox