Remove duplicate NuGet reference

Author: michael-hawker

UnitTests/UnitTests.UWP/UnitTests.UWP.csproj

@@ -122,9 +122,6 @@
     <PackageReference Include="System.Xml.XPath.XmlDocument">
       <Version>4.3.0</Version>
     </PackageReference>
-    <PackageReference Include="System.Xml.XPath.XmlDocument">
-      <Version>4.3.0</Version>
-    </PackageReference>
     <PackageReference Include="System.Text.Json">
       <Version>4.7.2</Version>
     </PackageReference>
@@ -501,4 +498,4 @@
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
+</Project>