remove dup comma

Author: longbai

src/main/java/com/qiniu/http/Client.java

@@ -60,7 +60,6 @@ public okhttp3.Response intercept(Chain chain) throws IOException {
                 public List<InetAddress> lookup(String hostname) throws UnknownHostException {
                     InetAddress[] ips;
                     Domain domain = new Domain(hostname, false, Config.dnsHostFirst);
-                    ;
                     try {
                         ips = d.queryInetAddress(domain);
                     } catch (IOException e) {