Fixes U4-1368 so the FileHandlerData doesn't handle setting properties for Document and Media.

Properties using the UploadField will have its value as well as related values updated in a BeforeSave event.

src/Umbraco.Core/IO/FileSystemExtensions.cs

@@ -1,8 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using Umbraco.Core.CodeAnnotations;
+using Umbraco.Core.CodeAnnotations;
 
 namespace Umbraco.Core.IO
 {
@@ -10,7 +6,7 @@ namespace Umbraco.Core.IO
     public static class FileSystemExtensions
     {
 		[UmbracoExperimentalFeature("", "Will be declared public after 4.10")]
-        internal static long GetSize(this IFileSystem fs, string path)
+		internal static long GetSize(this IFileSystem fs, string path)
         {
             var s = fs.OpenFile(path);
             var size = s.Length;
@@ -20,7 +16,7 @@ namespace Umbraco.Core.IO
         }
 
 		[UmbracoExperimentalFeature("", "Will be declared public after 4.10")]
-        internal static void CopyFile(this IFileSystem fs, string path, string newPath)
+		internal static void CopyFile(this IFileSystem fs, string path, string newPath)
         {
             fs.AddFile(newPath, fs.OpenFile(path));
         }

src/Umbraco.Core/IO/IFileSystem.cs

@@ -6,7 +6,7 @@ using Umbraco.Core.CodeAnnotations;
 namespace Umbraco.Core.IO
 {
 	[UmbracoExperimentalFeature("http://issues.umbraco.org/issue/U4-1156", "Will be declared public after 4.10")]
-    internal interface IFileSystem
+	internal interface IFileSystem
     {
         IEnumerable<string> GetDirectories(string path);