chore: remove redundant package reference.

Author: ramsessanchez

src/Authentication/Authentication.Test/Microsoft.Graph.Authentication.Test.csproj

@@ -9,7 +9,6 @@
     <!-- As described in this post https://devblogs.microsoft.com/powershell/depending-on-the-right-powershell-nuget-package-in-your-net-project, reference the SDK for dotnetcore-->
     <PackageReference Include="Microsoft.PowerShell.SDK" Version="7.5.0" PrivateAssets="all" Condition="'$(TargetFramework)' == 'net8.0'" />
     <PackageReference Include="Moq" Version="4.20.70" />
-  <PackageReference Include="System.Net.Http" Version="4.3.4" />
     <PackageReference Include="xunit" Version="2.4.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
       <PrivateAssets>all</PrivateAssets>