Cleanup refs

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

shadowsocks-csharp/shadowsocks-csharp.csproj

@@ -76,8 +76,6 @@
       <HintPath>3rd\Newtonsoft.Json.9.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="PresentationCore" />
-    <Reference Include="PresentationFramework" />
     <Reference Include="System" />
     <Reference Include="System.Data" />
     <Reference Include="System.Drawing" />
@@ -85,11 +83,8 @@
     <Reference Include="System.Net" />
     <Reference Include="System.Windows.Forms" />
     <Reference Include="System.Windows.Forms.DataVisualization" />
-    <Reference Include="System.Xaml" />
     <Reference Include="System.XML" />
-    <Reference Include="UIAutomationProvider" />
     <Reference Include="WindowsBase" />
-    <Reference Include="WindowsFormsIntegration" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="3rd\zxing\BarcodeFormat.cs" />

test/test.csproj

@@ -40,9 +40,6 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System" />
-    <Reference Include="System.Net" />
-    <Reference Include="System.Net.Http" />
-    <Reference Include="System.Net.Http.WebRequest" />
     <Reference Include="WindowsBase" />
   </ItemGroup>
   <Choose>