Readability changes to datagrid. Functional changes to come

Aurora/Design/Components/Library/Library.xaml.cs

@@ -1,9 +1,7 @@
 using System;
 using System.Collections.Generic;
-using System.Collections.ObjectModel;
 using System.Linq;
 using Xamarin.Forms;
-using Aurora.Models.Media;
 using System.ComponentModel;
 using System.Collections.Specialized;