Delete task code that has been moved to the shared framework SDK in Arcade

[dagood]

This copy of CreateFrameworkListFile is unused and should be deleted:

https://github.com/dotnet/runtime/blob/59a24e5/tools-local/tasks/installer.tasks/CreateFrameworkListFile.cs

True source:

https://github.com/dotnet/arcade/blob/8935804/src/Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk/src/CreateFrameworkListFile.cs

Any other leftover copies of tasks from the sharedfx SDK should be removed too.

[NikolaMilosavljevic]

@v-chayan can you validate that this is fixed and close?

[v-chayan]

Verified and close this issue.