Irrlicht: Get rid of obsolete setDebugName (#15541)

Co-authored-by: sfan5 <sfan5@live.de>

irr/src/CGUIFont.cpp

@@ -21,10 +21,6 @@ CGUIFont::CGUIFont(IGUIEnvironment *env, const io::path &filename) :
 		Driver(0), SpriteBank(0), Environment(env), WrongCharacter(0),
 		MaxHeight(0), GlobalKerningWidth(0), GlobalKerningHeight(0)
 {
-#ifdef _DEBUG
-	setDebugName("CGUIFont");
-#endif
-
 	if (Environment) {
 		// don't grab environment, to avoid circular references
 		Driver = Environment->getVideoDriver();