Comment must be not actual

[SergeyKanzhelev]

... as we have a setter now and already using it

Microsoft.AspNet.TelemetryCorrelation/src/Microsoft.AspNet.TelemetryCorrelation/TelemetryCorrelationHttpModule.cs

Lines 69 to 75 in e6bf3b4

	// Once we have public Activity.Current setter (https://github.com/dotnet/corefx/issues/29207) this method will be
	// simplified to just assign Current if is was lost.
	// In the mean time, we are creating child Activity to restore the context. We have to send
	// event with this Activity to tracing system. It created a lot of issues for listeners as
	// we may potentially have a lot of them for different stages.
	// To reduce amount of events, we only care about ExecuteRequestHandler stage - restore activity here and
	// stop/report it to tracing system in EndRequest.