Simplify the validate method for serviceinfo

Signed-off-by: catcherwong <[email protected]>

api/src/main/java/com/alibaba/nacos/api/naming/pojo/ServiceInfo.java

@@ -194,7 +194,7 @@ public boolean validate() {
                 continue;
             }
 
-            for (int i = 0; i < host.getWeight(); i++) {
+            if (host.getWeight() > 0) {
                 validHosts.add(host);
             }
         }