cleanup

todolist/fxui/src/main/java/todolist/ui/DirectTodoModelAccess.java

 package todolist.ui;
 
-import java.io.FileWriter;
-import java.io.IOException;
-import java.io.Writer;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.Path;
-import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.Collection;
 import todolist.core.AbstractTodoList;

todolist/fxui/src/main/java/todolist/ui/TodoAppController.java

 package todolist.ui;
 
-import java.io.FileReader;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.Reader;
@@ -9,8 +8,6 @@ import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URL;
 import java.nio.charset.StandardCharsets;
-import java.nio.file.Paths;
-import javafx.fxml.FXML;
 import todolist.core.TodoItem;
 import todolist.core.TodoList;
 import todolist.core.TodoModel;