Merge pull request #2357 from Bond-009/warn13

Fix warnings

MediaBrowser.Model/IO/IFileSystem.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.IO;
 
 namespace MediaBrowser.Model.IO
 {

MediaBrowser.Model/Net/ISocketFactory.cs

@@ -1,4 +1,3 @@
-using System.IO;
 using System.Net;
 
 namespace MediaBrowser.Model.Net

MediaBrowser.Model/Tasks/IScheduledTask.cs

@@ -39,9 +39,9 @@ namespace MediaBrowser.Model.Tasks
         Task Execute(CancellationToken cancellationToken, IProgress<double> progress);
 
         /// <summary>
-        /// Gets the default triggers.
+        /// Gets the default triggers that define when the task will run.
         /// </summary>
-        /// <returns>IEnumerable{BaseTaskTrigger}.</returns>
+        /// <returns>The default triggers that define when the task will run.</returns>
         IEnumerable<TaskTriggerInfo> GetDefaultTriggers();
     }
 }