Remove the downlevel feeds to reduce overall footprint

[marcpopMSFT]

No description provided.

[marcpopMSFT]

@MattGal unfortunately it looks like both 6 and 7 feeds are used. I can dig in later as to what they are used for but there are a couple of the 6.0 error listed below. Not cure if they can be updated or what.

D:\a_work\1\s\src\RazorSdk\Tasks\Microsoft.NET.Sdk.Razor.Tasks.csproj : error NU1603: Microsoft.NET.Sdk.Razor depends on Microsoft.Extensions.FileSystemGlobbing (>= 6.0.0-preview.7.21363.9) but Microsoft.Extensions.FileSystemGlobbing 6.0.0-preview.7.21363.9 was not found. An approximate best match of Microsoft.Extensions.FileSystemGlobbing 6.0.0-preview.7.21377.19 was resolved. [D:\a_work\1\s\sdk.sln]
D:\a_work\1\s\src\Tests\dotnet.Tests\dotnet.Tests.csproj : error NU1603: dotnet.Tests depends on Microsoft.DotNet.Installer.Windows.Security.TestData (>= 6.0.0-beta.22262.1) but Microsoft.DotNet.Installer.Windows.Security.TestData 6.0.0-beta.22262.1 was not found. An approximate best match of Microsoft.DotNet.Installer.Windows.Security.TestData 7.0.0-beta.21418.1 was resolved. [D:\a_work\1\s\sdk.sln]

[MattGal]

@MattGal unfortunately it looks like both 6 and 7 feeds are used.

No problem, thanks for checking.