Do not copy template files to output folders

[idg10]

Marain.UserNotifications.ApiDeliveryChannel.Host.csproj does this:

<None Update="local.settings.template.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
</None>

This should only be done for the actual files, not the templates.