删除无用代码

long-article-recommend-service/src/main/java/com/tzld/longarticle/recommend/server/service/exterior/impl/WeComServiceImpl.java

@@ -102,7 +102,7 @@ public class WeComServiceImpl implements WeComService {
         return null;
     }
 
-    public String truncateString(String input, int maxBytes) {
+    private String truncateString(String input, int maxBytes) {
         if (input == null || maxBytes <= 0) {
             return "";
         }