Remove lots of dead code

Add check for datatype overflows
use native datatype indices instead of fixed 16bit/32bit ones

src/client.h

@@ -384,9 +384,6 @@ public:
 			core::line3d<f32> shootline_on_map
 	);
 
-	// Prints a line or two of info
-	void printDebugInfo(std::ostream &os);
-
 	std::list<std::string> getConnectedPlayerNames();
 
 	float getAnimationTime();