= remove unused import

connector/core/src/main/java/com/alibaba/otter/canal/connector/core/filter/AviaterRegexFilter.java

@@ -2,7 +2,6 @@ package com.alibaba.otter.canal.connector.core.filter;
 
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.Comparator;
 import java.util.HashMap;
 import java.util.List;

dbsync/src/test/java/com/taobao/tddl/dbsync/FetcherPerformanceTest.java

 package com.taobao.tddl.dbsync;
 
-import java.io.IOException;
 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.Statement;

filter/src/main/java/com/alibaba/otter/canal/filter/aviater/AviaterRegexFilter.java

@@ -2,7 +2,6 @@ package com.alibaba.otter.canal.filter.aviater;
 
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.Comparator;
 import java.util.HashMap;
 import java.util.List;

parse/src/main/java/com/alibaba/otter/canal/parse/inbound/mysql/MysqlEventParser.java

@@ -2,7 +2,6 @@ package com.alibaba.otter.canal.parse.inbound.mysql;
 
 import java.io.IOException;
 import java.net.InetAddress;
-import java.net.SocketTimeoutException;
 import java.net.UnknownHostException;
 import java.util.HashMap;
 import java.util.List;

parse/src/main/java/com/alibaba/otter/canal/parse/inbound/mysql/local/BinLogFileQueue.java

@@ -2,7 +2,6 @@ package com.alibaba.otter.canal.parse.inbound.mysql.local;
 
 import java.io.File;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Timer;