add: 调整配置

yanxuan-qc-change-system-dal/src/main/java/com/netease/mail/yanxuan/change/dal/config/DataSourceConfiguration.java

 package com.netease.mail.yanxuan.change.dal.config;
 
 
-import com.alibaba.druid.filter.stat.StatFilter;
-import com.alibaba.druid.pool.DruidDataSource;
 import com.ctrip.framework.apollo.spring.annotation.EnableApolloConfig;
 import com.google.common.collect.ImmutableSet;
-import com.google.common.collect.Lists;
 import com.netease.yanxuan.pandora.DataSourceRefresher;
 import com.netease.yanxuan.pandora.spring.annotation.EnableDataSourceRefresh;
 import org.apache.commons.dbcp.BasicDataSource;