oshttp send: modern TAP is still just a complex wrapper of 'obsolete' APM hidding at IL level, so just use the 'obsolete'

OpenSim/Framework/Servers/HttpServer/OSHttpServer/IHttpResponse.cs

@@ -26,7 +26,6 @@ namespace OSHttpServer
     /// </example>
     public interface IHttpResponse
     {
-        event EventHandler<BandWitdhEventArgs> BandWitdhEvent;
         /// <summary>
         /// The body stream is used to cache the body contents
         /// before sending everything to the client. It's the simplest
@@ -145,19 +144,4 @@ namespace OSHttpServer
         /// </summary>
         KeepAlive
     }
-
-    public class BandWitdhEventArgs : EventArgs
-    {
-        /// <summary>
-        /// Gets received request.
-        /// </summary>
-        public int Result;
-        public int Request;
-
-        public BandWitdhEventArgs(int request)
-        {
-            Request = request;
-            Result = request;
-        }
-    }
 }