删除无用代码

src/main/java/top/husj/husj_wx/utils/SignUtil.java

@@ -1,16 +0,0 @@
-package top.husj.husj_wx.utils;
-
-import java.util.Arrays;
-
-public class SignUtil {
-    public static boolean checkSignature(String token, String signature, String timestamp, String nonce) {
-        String[] arr = new String[]{token, timestamp, nonce};
-        Arrays.sort(arr); // 字典序排序
-        StringBuilder content = new StringBuilder();
-        for (String s : arr) content.append(s);
-        
-        // 使用Apache Commons Codec或自定义SHA1加密
-        String temp = DigestUtils.sha1Hex(content.toString());
-        return temp.equalsIgnoreCase(signature);
-    }
-}