Removed boost from Windows build since it's not needed.

build-windows/pEpEngine.vcxproj

@@ -222,17 +222,6 @@
       <Project>{9a67164d-b8f8-4601-a24b-28afe774d41c}</Project>
     </ProjectReference>
   </ItemGroup>
-  <ItemGroup>
-    <None Include="packages.config" />
-  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <ImportGroup Label="ExtensionTargets">
-    <Import Project="..\..\packages\boost.1.71.0.0\build\boost.targets" Condition="Exists('..\..\packages\boost.1.71.0.0\build\boost.targets')" />
-  </ImportGroup>
-  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
-    <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
-    </PropertyGroup>
-    <Error Condition="!Exists('..\..\packages\boost.1.71.0.0\build\boost.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\boost.1.71.0.0\build\boost.targets'))" />
-  </Target>
+  <ImportGroup Label="ExtensionTargets" />
 </Project>

build-windows/pEpEngine.vcxproj.filters

@@ -270,7 +270,4 @@
   <ItemGroup>
     <Text Include="..\LICENSE.txt" />
   </ItemGroup>
-  <ItemGroup>
-    <None Include="packages.config" />
-  </ItemGroup>
 </Project>

build-windows/packages.config

@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<packages>
-  <package id="boost" version="1.71.0.0" targetFramework="native" />
-</packages>