Enable nullable in more files

MediaBrowser.Model/Channels/ChannelInfo.cs

@@ -1,32 +0,0 @@
-#nullable disable
-#pragma warning disable CS1591
-
-namespace MediaBrowser.Model.Channels
-{
-    public class ChannelInfo
-    {
-        /// <summary>
-        /// Gets or sets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name { get; set; }
-
-        /// <summary>
-        /// Gets or sets the identifier.
-        /// </summary>
-        /// <value>The identifier.</value>
-        public string Id { get; set; }
-
-        /// <summary>
-        /// Gets or sets the home page URL.
-        /// </summary>
-        /// <value>The home page URL.</value>
-        public string HomePageUrl { get; set; }
-
-        /// <summary>
-        /// Gets or sets the features.
-        /// </summary>
-        /// <value>The features.</value>
-        public ChannelFeatures Features { get; set; }
-    }
-}