Remove useless modifier.

Author: sutra

webmagic-core/src/main/java/us/codecraft/webmagic/downloader/HttpClientGenerator.java

@@ -36,7 +36,7 @@
  */
 public class HttpClientGenerator {
 
-    private transient Logger logger = LoggerFactory.getLogger(getClass());
+    private Logger logger = LoggerFactory.getLogger(getClass());
 
     private PoolingHttpClientConnectionManager connectionManager;