Removed legacy IO code

core/src/mindustry/io/legacy/LegacyIO.java

@@ -0,0 +1,36 @@
+package mindustry.io.legacy;
+
+import arc.*;
+import arc.struct.*;
+import mindustry.ui.dialogs.JoinDialog.*;
+
+import java.io.*;
+
+public class LegacyIO{
+
+    public static Array<Server> readServers(){
+        Array<Server> arr = new Array<>();
+
+        try{
+            byte[] bytes = Core.settings.getBytes("server-list");
+            DataInputStream stream = new DataInputStream(new ByteArrayInputStream(bytes));
+
+            int length = stream.readInt();
+            if(length > 0){
+                //name of type, irrelevant
+                stream.readUTF();
+
+                for(int i = 0; i < length; i++){
+                    Server server = new Server();
+                    server.ip = stream.readUTF();
+                    server.port = stream.readInt();
+                    arr.add(server);
+                }
+            }
+        }catch(Exception e){
+            e.printStackTrace();
+        }
+        return arr;
+    }
+
+}