removed system web from providers project

MediaBrowser.Providers/MediaBrowser.Providers.csproj

@@ -38,7 +38,6 @@
     <Reference Include="System" />
     <Reference Include="System.Core" />
     <Reference Include="System.Net" />
-    <Reference Include="System.Web" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />

MediaBrowser.Providers/Movies/MovieDbProvider.cs

@@ -675,7 +675,7 @@ namespace MediaBrowser.Providers.Movies
                 }
                 if (!movie.LockedFields.Contains(MetadataFields.Overview))
                 {
-                    movie.Overview = System.Web.HttpUtility.HtmlDecode(movieData.overview);
+                    movie.Overview = WebUtility.HtmlDecode(movieData.overview);
                 }
                 movie.Overview = movie.Overview != null ? movie.Overview.Replace("\n\n", "\n") : null;
                 movie.HomePageUrl = movieData.homepage;