fix pmd

Signed-off-by: AE86 <836391306@qq.com>

dbsyncer-connector/src/main/java/org/dbsyncer/connector/schema/BitValueMapper.java

@@ -5,7 +5,6 @@ import org.dbsyncer.connector.AbstractValueMapper;
 import org.dbsyncer.connector.ConnectorException;
 
 import java.nio.ByteBuffer;
-import java.util.Arrays;
 import java.util.BitSet;
 
 /**