fix System.currentTimeMillis()

src/main/java/com/fdkankan/site/httpClient/interceptor/SignInterceptor.java

@@ -32,7 +32,6 @@ public class SignInterceptor implements Interceptor<JSONObject> {
     public void onInvokeMethod(ForestRequest request, ForestMethod method, Object[] args) {
         log.info("on invoke method sign");
         JSONObject playload = new JSONObject();
-        Instant now = Instant.now();
         long epochSecond =System.currentTimeMillis();
         playload.put("appId", appid);
         playload.put("timestamp", epochSecond);