HPUX: Delete void * operator new(size_t) methods

These were apparently needed by the HPUX compiler even though it
never actually executed them.  They are never used.

src/ca/client/oldChannelNotify.cpp

@@ -159,13 +159,6 @@ void oldChannelNotify::writeException (
         __FILE__, __LINE__, *this, type, count, CA_OP_PUT );
 }
 
-void * oldChannelNotify::operator new ( size_t )
-{
-    // The HPUX compiler seems to require this even though no code
-    // calls it directly
-    throw std::logic_error ( "why is the compiler calling private operator new" );
-}
-
 void oldChannelNotify::operator delete ( void * )
 {
     // Visual C++ .net appears to require operator delete if