refactor(utils): 更新异常类导入路径并添加JSON依赖

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yesterday 75ffb97146a0a15d76ae4603ccf328eb9716d798

 src/main/java/com/xcong/excoin/modules/coin/service/impl/CoinServiceImpl.java

@@ -137,8 +137,6 @@
            memberWalletCoinlist.add(coin);

            coin.setWalletCode(CoinTypeEnum.USDT.toString());

            memberWalletCoinlist.add(coin);

            coin.setWalletCode(CoinTypeEnum.EOS.toString());

            memberWalletCoinlist.add(coin);

            coin.setWalletCode(CoinTypeEnum.XRP.toString());

            memberWalletCoinlist.add(coin);

            coin.setWalletCode(CoinTypeEnum.ETC.toString());