Plugin obsolete by Xamarin.Essentials
## 🏗 Enhancement Proposal

With Xamarin.Essential there are some plugins that have become obsolete. Shouldn't we take them off?

### Pitch

<!--- How will this refactor improve contributors' lives? Input as many details as possible! --->

### Platforms affected (mark all that apply)
- [x] :iphone: iOS
- [x] :robot: Android
- [x] :checkered_flag: WPF
- [x] :earth_americas: UWP
- [x] :apple: MacOS
- [x] :tv: tvOS
- [x] :monkey: Xamarin.Forms
