Remove enforcement overrides for a pre-receive hook

Removes any overrides for this hook at the org level for this org.

DELETE /orgs/:org/pre-receive-hooks/:pre_receive_hook_id

Status: 200 OK

{
  "id": 42,
  "name": "Check Commits",
  "enforcement": "disabled",
  "configuration_url": "https://github.example.com/api/v3/admin/pre-receive-hooks/42",
  "allow_downstream_configuration": true
}