Reconsider tracing functionality when EventSource is disabled

[deeprobin]

Follow-up issue for #43657

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As described in #63902, it would be good to remove comments and workarounds that have already been fixed.

Would be great if someone would take another look at the following (and whether this can be removed or replaced with something better if necessary).

runtime/src/libraries/System.Private.CoreLib/src/System/Diagnostics/Tracing/NativeRuntimeEventSource.cs

Lines 40 to 44 in f04a242

	{
	// A simple fix to avoid dependencies brought by this method if event source is disabled via a feature switch.
	// Should be reconsidered when https://github.com/dotnet/runtime/issues/43657 is done.
	if (!IsSupported)
	{

/area System.Diagnostics.Tracing