Remove DatabaseAdapter

Apparently I don't use this class, and probably never will.

app/src/main/java/info/nerull7/mysqlbrowser/DatabaseAdapter.java

@@ -1,28 +0,0 @@
-package info.nerull7.mysqlbrowser;
-
-import android.content.Context;
-import android.widget.ArrayAdapter;
-
-import java.util.HashMap;
-
-/**
- * Created by nerull7 on 14.07.14.
- */
-public class DatabaseAdapter extends ArrayAdapter<String>{
-    HashMap<String, Integer> map = new HashMap<String, Integer>();
-
-    public DatabaseAdapter(Context context, int resource, String[] objects) {
-        super(context, resource, objects);
-    }
-
-    @Override
-    public long getItemId(int position){
-        String item = getItem(position);
-        return map.get(item);
-    }
-
-    @Override
-    public boolean hasStableIds(){
-        return true;
-    }
-}