Change Region.Area to abstract class instead of interface

BauSystem/BauSystem_RegionFixed/src/de/steamwar/bausystem/region/fixed/FixedRegion.java

@@ -31,7 +31,6 @@ import de.steamwar.sql.GameModeConfig;
 import de.steamwar.sql.SchematicType;
 import lombok.NonNull;
 import org.bukkit.Bukkit;
-import org.bukkit.Location;
 import org.bukkit.Material;
 import yapion.hierarchy.types.YAPIONObject;
 
@@ -39,7 +38,6 @@ import javax.annotation.Nullable;
 import java.io.File;
 import java.nio.charset.StandardCharsets;
 import java.time.LocalDateTime;
-import java.time.format.DateTimeFormatter;
 import java.util.*;
 import java.util.stream.Collectors;