Cleaning up e-reader loader code

examples/LinkCard_demo/#loader/src/main.c

@@ -27,11 +27,6 @@ const u8 MSG_CARD_SENT[] = {0x83, 0x4a, 0x81, 0x5b, 0x83, 0x68, 0x91, 0x97,
 /* "エラー" */
 const u8 MSG_ERROR[] = {0x83, 0x47, 0x83, 0x89, 0x81, 0x5b, 0x00};
 
-/* "エーを押して再試行" */
-const u8 MSG_PRESS_A_TRY_AGAIN[] = {0x83, 0x47, 0x81, 0x5b, 0x82, 0xf0, 0x89,
-                                    0x9f, 0x82, 0xb5, 0x82, 0xc4, 0x8d, 0xc4,
-                                    0x8e, 0x8e, 0x8d, 0x73, 0x00};
-
 /* "ビーを押してキャンセル" */
 const u8 MSG_PRESS_B_CANCEL[] = {0x83, 0x72, 0x81, 0x5b, 0x82, 0xf0, 0x89, 0x9f,
                                  0x82, 0xb5, 0x82, 0xc4, 0x83, 0x4c, 0x83, 0x83,
@@ -57,7 +52,6 @@ const u16 palette[] = {0x0000, 0xFFFF};
 
 void print(const char* text);
 bool cancel();
-bool tryAgain();
 void reset();
 
 int main() {
@@ -185,11 +179,6 @@ bool cancel() {
   return (keys & ERAPI_KEY_B) != 0;
 }
 
-bool tryAgain() {
-  u32 keys = ERAPI_GetKeyStateRaw();
-  return (keys & ERAPI_KEY_A) != 0;
-}
-
 void reset() {
   setGeneralPurposeMode();
   setMultiPlayMode(3);  // 3 = 115200 bps