#78 -- fix code

src/main/java/ru/ulstu/extractor/gitrepository/service/GitRepositoryService.java

@@ -30,7 +30,6 @@ import ru.ulstu.extractor.heuristic.model.ResourceUnit;
 import ru.ulstu.extractor.heuristic.service.StructuralUnitService;
 import ru.ulstu.extractor.model.Commit;
 
-import javax.swing.text.html.parser.Entity;
 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;
@@ -40,7 +39,12 @@ import java.net.URL;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.time.Instant;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;