优化结构

internal/integration/payment/wechat_v3.go

@@ -596,10 +596,3 @@ func parseJSONInteger(object map[string]any, key string) (int64, bool, error) {
 	amount, err := parseIntegerAmount(fmt.Sprint(raw))
 	return amount, true, err
 }
-
-func decryptWechatV3(ciphertext, nonce, associatedData, key string) ([]byte, error) {
-	if len(key) != 32 {
-		return nil, errors.New("微信支付 v3 api_v3_key 必须为 32 字节")
-	}
-	return gopayWechatV3.V3DecryptNotifyCipherTextToBytes(ciphertext, nonce, associatedData, key)
-}