Permanently deletes a policy.
The deletePolicy() function returns a Promise that resolves when the specified policy is deleted.
Deleted policies are not returned by the getPolicy() or queryPolicies() functions.
You can only call this method when authenticated as a Wix app or Wix user identity.
ID of the policy to delete.
This method doesn’t return any custom errors, but may return standard errors. Learn more about standard Wix errors.