Fixed tests

core/src/mindustry/io/versions/Save6.java

@@ -1,31 +1,9 @@
 package mindustry.io.versions;
 
-import arc.util.io.*;
-import mindustry.io.*;
-import mindustry.world.*;
-
-import java.io.*;
-
-import static mindustry.Vars.*;
-
 /** This version does not read custom chunk data. */
-public class Save6 extends SaveVersion{
+public class Save6 extends LegacyRegionSaveVersion{
 
     public Save6(){
         super(6);
     }
-
-    @Override
-    public void read(DataInputStream stream, CounterInputStream counter, WorldContext context) throws IOException{
-        region("meta", stream, counter, this::readMeta);
-        region("content", stream, counter, this::readContentHeader);
-
-        try{
-            region("map", stream, counter, in -> readMap(in, context));
-            region("entities", stream, counter, this::readEntities);
-        }finally{
-            content.setTemporaryMapper(null);
-
-        }
-    }
 }