WPF transport packages have extra 'version.txt'

[mmitche]

Non-p4 critical, since these packages don't ship, but the WPF transport packages built in the VMR have an extra 'version.txt':

<AssetMapping Id="runtime.win-arm64.Microsoft.DotNet.Wpf.GitHub" Type="Package">
      <DiffFile>D:\a\_work\1\a\vmr-assets\PackageArtifacts\runtime.win-arm64.Microsoft.DotNet.Wpf.GitHub.10.0.0-preview.4.25176.115.nupkg</DiffFile>
      <BaseFile>D:\a\_work\1\a\base-assets\wpf\nonshipping\packages\runtime.win-arm64.Microsoft.DotNet.Wpf.GitHub.10.0.0-preview.4.25174.5.nupkg</BaseFile>
      <EvaluationErrors />
      <Issues>
        <Issue Type="ExtraPackageContent" Description="version.txt" />
        <Issue Type="PackageMetadataDifference" Description="Package nuspec 'ProjectUrl': base='https://github.com/dotnet/wpf' vs diff='https://github.com/dotnet/dotnet'" />
      </Issues>
    </AssetMapping>

[ViktorHofer]

This got fixed. I removed the version.txt files from the wpf packages.