Remove CodePages from csproj

MediaBrowser.MediaEncoding/MediaBrowser.MediaEncoding.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
@@ -22,10 +22,4 @@
     <PackageReference Include="UTF.Unknown" Version="1.0.0-beta1" />
   </ItemGroup>
 
-  <ItemGroup>
-    <Reference Include="System.Text.Encoding.CodePages, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
-      <HintPath>..\..\..\.nuget\packages\system.text.encoding.codepages\4.5.0\ref\netstandard2.0\System.Text.Encoding.CodePages.dll</HintPath>
-    </Reference>
-  </ItemGroup>
-
 </Project>