How to hide the playback slider in the iOS Control

Question

In a streaming music app, it doesn't make sense to display the playback slider in the Control Center or on the lock screen. How can I hide the slider?

I use Xamarin, but any code snippets in Obj-C or Swift would be welcomed.

To hide the backwards and forwards buttons, I disabled commands on MPRemoteCommandCenter. However, I've had no luck with hiding the slider with this technique.