Backed out debug code

src/hidapi/SDL_hidapi.c

@@ -66,7 +66,6 @@
 #if __LINUX__
 
 #include "../../core/linux/SDL_udev.h"
-#undef SDL_USE_LIBUDEV
 #if SDL_USE_LIBUDEV
 static const SDL_UDEV_Symbols *udev_ctx = NULL;