Even more conversion, lots of superfluous macro removal

Quake/net_bsd.cpp

@@ -63,7 +63,7 @@ net_driver_t net_drivers[] =
 	}
 };
 
-const int net_numdrivers = Q_COUNTOF(net_drivers);
+const int net_numdrivers = std::size(net_drivers);
 
 #include "net_udp.hpp"
 
@@ -93,4 +93,4 @@ net_landriver_t	net_landrivers[] =
 	}
 };
 
-const int net_numlandrivers = Q_COUNTOF(net_landrivers);
+const int net_numlandrivers = std::size(net_landrivers);