Remove unnecessary ValidationStrings.resx file.

src/System.Collections.Immutable/src/System.Collections.Immutable.csproj

@@ -1,13 +1,10 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
-
-
   <PropertyGroup>
     <!-- Work around known Dev14 bug - see
          https://connect.microsoft.com/VisualStudio/feedback/details/1000796/connect-file-uap-props-not-found-cant-build-a-portable-lib-on-vs14
-    --> 
-
+    -->
     <_WindowsKitBinPath>C:\Program Files (x86)\Windows Kits\8.1\bin\x86</_WindowsKitBinPath>
     <_WindowsPhoneKitBinPath>C:\Program Files (x86)\Windows Phone Kits\8.1\bin</_WindowsPhoneKitBinPath>
     <MakePriExeFullPath>$(_WindowsKitBinPath)\makepri.exe</MakePriExeFullPath>
@@ -16,8 +13,6 @@
     <MakePriExtensionPath>$(_WindowsPhoneKitBinPath)\x86\MrmEnvironmentExtDl.dll</MakePriExtensionPath>
     <MakePriExtensionPath_x64>$(_WindowsPhoneKitBinPath)\x64\MrmEnvironmentExtDl.dll</MakePriExtensionPath_x64>
   </PropertyGroup>
-
-
   <PropertyGroup>
     <MinimumVisualStudioVersion>10.0</MinimumVisualStudioVersion>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -119,30 +114,19 @@
     <Compile Include="System\Diagnostics\CodeAnalysis\ExcludeFromCodeCoverageAttribute.cs" />
     <Compile Include="System\Linq\ImmutableArrayExtensions.cs" />
     <Compile Include="System\Runtime\InteropServices\ImmutableArrayInterop.cs" />
-
     <Compile Include="Strings.Designer.cs">
       <AutoGen>True</AutoGen>
       <DesignTime>True</DesignTime>
       <DependentUpon>Strings.resx</DependentUpon>
     </Compile>
     <Compile Include="Validation\Requires.cs" />
     <Compile Include="Validation\ValidatedNotNullAttribute.cs" />
-    <Compile Include="Validation\ValidationStrings.Designer.cs">
-      <DependentUpon>Validation\ValidationStrings.resx</DependentUpon>
-      <AutoGen>True</AutoGen>
-      <DesignTime>True</DesignTime>
-    </Compile>
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="Strings.resx">
       <Generator>ResXFileCodeGenerator</Generator>
       <LastGenOutput>Strings.Designer.cs</LastGenOutput>
     </EmbeddedResource>
-    <EmbeddedResource Include="Validation\ValidationStrings.resx">
-      <Generator>ResXFileCodeGenerator</Generator>
-      <LastGenOutput>ValidationStrings.Designer.cs</LastGenOutput>
-      <CustomToolNamespace>Validation</CustomToolNamespace>
-    </EmbeddedResource>
   </ItemGroup>
   <ItemGroup>
     <None Include="Interfaces.cd" />
@@ -155,4 +139,4 @@
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
+</Project>