copy Obsolete attributes to Akka.Persistence.TCK

[Aaronontheweb]

Changes

copy Obsolete attributes to Akka.Persistence.TCK - same changes as we made to the TestKit base classes for Xunit.

Checklist

For significant changes, please ensure that the following have been completed (delete if not relevant):

• This change follows the Akka.NET API Compatibility Guidelines.
• This change follows the Akka.NET Wire Compatibility Guidelines.

[Arkatufus]

LGTM

[Aaronontheweb]

Do we need to add this back?

[Arkatufus]

Hold on, I think I smelled something fishy in the code

[Arkatufus]

The old code was actually wrong, Dispose() and Dispose(bool) methods are already implemented in the base class here:

akka.net/src/contrib/testkits/Akka.TestKit.Xunit2/TestKit.cs

Lines 197 to 206 in c7ac23b

	[Obsolete("Dispose(bool) is deprecated, please use DisposeAsync() instead")]
	protected virtual void Dispose(bool disposing)
	{
	}
	[Obsolete("Dispose() is obsolete, please use DisposeAsync() instead")]
	public void Dispose()
	{
	Dispose(true);
	}