Remove unused imports

h2/src/main/org/h2/index/PageDataIndex.java

@@ -9,7 +9,6 @@ import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
-import java.util.List;
 import org.h2.api.ErrorCode;
 import org.h2.command.dml.AllColumnsForPlan;
 import org.h2.engine.Constants;

h2/src/main/org/h2/index/ScanIndex.java

@@ -10,7 +10,6 @@ import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
-import java.util.List;
 
 import org.h2.api.ErrorCode;
 import org.h2.command.dml.AllColumnsForPlan;

h2/src/main/org/h2/server/TcpServer.java

@@ -16,9 +16,7 @@ import java.sql.SQLException;
 import java.sql.Statement;
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.HashMap;
 import java.util.HashSet;
-import java.util.Map;
 import java.util.Properties;
 import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;

h2/src/main/org/h2/store/Data.java

@@ -20,7 +20,6 @@ import java.sql.Timestamp;
 import java.util.Arrays;
 import org.h2.api.ErrorCode;
 import org.h2.engine.Constants;
-import org.h2.engine.SysProperties;
 import org.h2.message.DbException;
 import org.h2.tools.SimpleResultSet;
 import org.h2.util.Bits;

h2/src/main/org/h2/store/LobStorageBackend.java

@@ -17,7 +17,6 @@ import java.util.Arrays;
 import java.util.HashMap;
 import org.h2.api.ErrorCode;
 import org.h2.engine.Database;
-import org.h2.engine.SysProperties;
 import org.h2.jdbc.JdbcConnection;
 import org.h2.message.DbException;
 import org.h2.tools.CompressTool;