logging: remove kprintf() logging for Wii

Using kprintf() is a bit inconvenient, since it's not visible by default
(at least in Dolphin). stderr is good enough.

Author: mardy

bt-embedded/platform_defs.h

@@ -6,9 +6,7 @@ extern "C" {
 #endif
 
 #ifdef __wii__
-#  include <ogc/system.h>
 #  define BTE_BUFFER_ALIGNMENT_SIZE 32
-#  define BTE_LOG(fmt, ...) kprintf(fmt, __VA_ARGS__)
 #endif
 
 #ifdef BTE_BUFFER_ALIGNMENT_SIZE