remove unused UPnP code from main.h

src/main.h

@@ -66,12 +66,6 @@ static const int MAX_BLOCKS_IN_TRANSIT_PER_PEER = 128;
 /** Timeout in seconds before considering a block download peer unresponsive. */
 static const unsigned int BLOCK_DOWNLOAD_TIMEOUT = 60;
 
-#ifdef USE_UPNP
-static const int fHaveUPnP = true;
-#else
-static const int fHaveUPnP = false;
-#endif
-
 /** "reject" message codes **/
 static const unsigned char REJECT_MALFORMED = 0x01;
 static const unsigned char REJECT_INVALID = 0x10;