fixed compiler error

deployer/src/main/java/com/alibaba/otter/canal/deployer/CanalController.java

@@ -104,7 +104,6 @@ public class CanalController {
         }
 
         // 准备canal server
-        cid = Long.valueOf(getProperty(properties, CanalConstants.CANAL_ID));
         ip = getProperty(properties, CanalConstants.CANAL_IP);
         registerIp = getProperty(properties, CanalConstants.CANAL_REGISTER_IP);
         port = Integer.valueOf(getProperty(properties, CanalConstants.CANAL_PORT));