Do not use exceptions in the ASIOOutputReady() code path.

Timing data indicates this is causing deadlines to be missed due to
poor exception throwing performance.

src/asio401/ASIO401/casio401.cpp

@@ -133,9 +133,11 @@ namespace asio401 {
 			}
 
 			ASIOError outputReady() throw() final {
-				return Enter("outputReady()", [] {
-					throw ASIOException(ASE_NotPresent, "outputReady() is not supported");
-				});
+				// We do not use Enter() and throw here, because this can be called in a real-time code path, and the cost
+				// of throwing exceptions is high and highly variable. When Enter() + throw was used here, this method could
+				// take as much as ~10 ms to run in the long tail.
+				Log() << "outputReady() called, returning ASE_NotPresent";
+				return ASE_NotPresent;
 			}
 
 		private: