retail: remove f_xy implementation

We only need the keys.

retail/arm9/source/conf_sd.cpp

@@ -33,7 +33,6 @@
 #include "version.h"
 
 #include "nandio.h"
-#include "f_xy.h"
 #include "dsi.h"
 #include "u128_math.h"
 
@@ -49,6 +48,15 @@
 
 struct IgmText *igmText = (struct IgmText *)INGAME_MENU_LOCATION;
 
+const uint8_t DSi_KEY_MAGIC[16] = { 0x79, 0x3e, 0x4f, 0x1a, 0x5f, 0x0f, 0x68, 0x2a,
+                                    0x58, 0x02, 0x59, 0x29, 0x4e, 0xfb, 0xfe, 0xff }; 
+const uint8_t DSi_NAND_KEY_Y[16] = { 0x76, 0xdc, 0xb9, 0x0a, 0xd3, 0xc4, 0x4d, 0xbd,
+                                     0x1d, 0xdd, 0x2d, 0x20, 0x05, 0x00, 0xa0, 0xe1 };
+const uint8_t DSi_ES_KEY_Y[16] = { 0xe5, 0xcc, 0x5a, 0x8b, 0x56, 0xd0, 0xc9,0x72,
+                                   0x9c, 0x17, 0xe8, 0xdc, 0x39, 0x12, 0x36, 0xa9 };
+const uint8_t DSi_BOOT2_KEY[16] = { 0x98, 0xee, 0x80, 0x80, 0x00, 0x6c, 0xb4, 0xf6,
+                                    0x3a, 0xc2, 0x6e, 0x62, 0xf9, 0xec, 0x34, 0xad };
+
 void decrypt_modcrypt_area(dsi_context* ctx, u8 *buffer, unsigned int size)
 {
 	uint32_t len = size / 0x10;