Delete outdated comments (#105519)

Author: jkotas

src/libraries/System.Private.CoreLib/src/System/Diagnostics/Tracing/EventProvider.cs

@@ -87,10 +87,7 @@ public enum WriteEventErrorCode : int
         // Because callbacks happen on registration, and we need the callbacks for those setup
         // we can't call Register in the constructor.
         //
-        // Note that EventProvider should ONLY be used by EventSource.  In particular because
-        // it registers a callback from native code you MUST dispose it BEFORE shutdown, otherwise
-        // you may get native callbacks during shutdown when we have destroyed the delegate.
-        // EventSource has special logic to do this, no one else should be calling EventProvider.
+        // Note that EventProvider should ONLY be used by EventSource.
         internal EventProvider(EventProviderType providerType)
         {
             _eventProvider = providerType switch
@@ -106,9 +103,7 @@ internal EventProvider(EventProviderType providerType)
         }
 
         /// <summary>
-        /// This method registers the controlGuid of this class with ETW. We need to be running on
-        /// Vista or above. If not a PlatformNotSupported exception will be thrown. If for some
-        /// reason the ETW Register call failed a NotSupported exception will be thrown.
+        /// This method registers the controlGuid of this class with ETW.
         /// </summary>
         internal unsafe void Register(EventSource eventSource)
         {