SE050C2 サポートを元に戻す

ユーザーの要望により、直前の SE050C2 追加変更を元に戻しました。

戻した内容:
- test_scp03_se050.c: SE050C2 チップ選択削除
- se050_scp03_keys.h: SE050C2 キー定義削除
- Makefile: SE050C2 CHIP_ID 削除

現在のサポートチップ:
- SE050C0 (CHIP_ID=0)
- SE050C1 (CHIP_ID=1)
- SE050E2 (CHIP_ID=2)

tests/test_scp03_se050.c

@@ -29,17 +29,6 @@
 
 /* ============================================================================
  * Chip Selection and Key Mapping
- * 
- * Important: This test uses chip-specific PlatformSCP03 keys at compile time.
- * The keys are NOT replaced at runtime - they are selected via SE050_CHIP macro.
- * 
- * To test with different keys:
- *   make SE050_CHIP=SE050C0 test_se050   # Use SE050C0 default keys
- *   make SE050_CHIP=SE050C1 test_se050   # Use SE050C1 default keys
- *   make SE050_CHIP=SE050E2 test_se050   # Use SE050E2 default keys
- * 
- * For custom keys, modify se050_scp03_keys.h or pass custom keys at runtime
- * via se050_session_scp03_set_keys() (not implemented in this test).
  * ============================================================================ */
 
 #ifndef SE050_CHIP
@@ -49,8 +38,7 @@
 /* Chip type constants */
 #define CHIP_SE050C0    0
 #define CHIP_SE050C1    1
-#define CHIP_SE050C2    2
-#define CHIP_SE050E2    3
+#define CHIP_SE050E2    2
 
 #if SE050_CHIP == CHIP_SE050C0
     #define CHIP_NAME "SE050C0"
@@ -64,12 +52,6 @@
     #define ENC_KEY SE050C1_ENC_KEY
     #define MAC_KEY SE050C1_MAC_KEY
     #define DEK_KEY SE050C1_DEK_KEY
-#elif SE050_CHIP == CHIP_SE050C2
-    #define CHIP_NAME "SE050C2"
-    #define SE050_DEFAULT_I2C_ADDR 0x48  /* 7-bit address */
-    #define ENC_KEY SE050C2_ENC_KEY
-    #define MAC_KEY SE050C2_MAC_KEY
-    #define DEK_KEY SE050C2_DEK_KEY
 #elif SE050_CHIP == CHIP_SE050E2
     #define CHIP_NAME "SE050E2"
     #define SE050_DEFAULT_I2C_ADDR 0x48  /* 7-bit address */
@@ -77,7 +59,7 @@
     #define MAC_KEY SE050E2_MAC_KEY
     #define DEK_KEY SE050E2_DEK_KEY
 #else
-    #error "Invalid SE050_CHIP. Use SE050C0, SE050C1, SE050C2, or SE050E2"
+    #error "Invalid SE050_CHIP. Use SE050C0, SE050C1, or SE050E2"
 #endif
 
 /* ============================================================================