HPUX: Remove all // X aCC comments

These were added to suppress warnings from the HPUX compiler.

src/ca/client/netSubscription.cpp

@@ -170,7 +170,7 @@ void netSubscription::forceSubscriptionUpdate (
         guard, chan, *this );
 }
 
-void * netSubscription::operator new ( size_t ) // X aCC 361
+void * netSubscription::operator new ( size_t )
 {
     // The HPUX compiler seems to require this even though no code
     // calls it directly