code: public boolean remove(Object mem){
          try {   
          	boolean result = false;
          	if(isCluster(groupName)){
          		result = getBinaryJedisClusterCommands(groupName).zrem(keyBytes,valueSerialize(mem)) >= 1;
          	}else{
          		result = getBinaryJedisCommands(groupName).zrem(keyBytes,valueSerialize(mem)) >= 1;
          	}
  			return result;
      	} finally{
  			getJedisProvider(groupName).release();
  		}
  	}
docs: 删除有序集合中的一个成员
  @param member
  @return