chore: remove default Maven and Gradle project files

first-part/hw-03/project-root/app/src/main/java/org/example/App.java

@@ -1,79 +0,0 @@
-/*
- * This source file was generated by the Gradle 'init' task
- */
-package org.example;
-
-import org.example.adapter.*;
-import org.example.builder.*;
-import org.example.chain.*;
-import org.example.decorator.*;
-import org.example.proxy.*;
-import org.example.strategy.*;
-
-public class App {
-  public static void main(String[] args) {
-    run();
-  }
-
-  private static void run() {
-    checkAdapterPattern();
-
-    checkBuilderPattern();
-
-    checkChainPattern();
-
-    checkDecoratorPattern();
-
-    checkProxyPattern();
-
-    checkStrategyPattern();
-  }
-
-  private static void checkAdapterPattern() {
-    Adaptee adaptee = new Adaptee();
-    Target target = new Adapter(adaptee);
-
-    target.methodWithoutArguments();
-  }
-
-  private static void checkBuilderPattern() {
-    Product product =
-        new ProductBuilder().setFirst("first").setSecond("second").setThird(3).build();
-
-    System.out.println(product);
-  }
-
-  private static void checkChainPattern() {
-    Handler handler = new ConcreteHandlerA();
-    handler.setNext(new ConcreteHandlerB());
-
-    handler.handle(42);
-    handler.handle("Hello");
-  }
-
-  private static void checkDecoratorPattern() {
-    Component component = new ConcreteComponent();
-    Component decorator = new ConcreteDecorator(component);
-
-    decorator.operation();
-  }
-
-  private static void checkProxyPattern() {
-    Service service = new ConcreteService();
-    Service proxy = new ServiceProxy(service);
-
-    proxy.execute();
-  }
-
-  private static void checkStrategyPattern() {
-    Context context = new Context(new ConcreteStrategyA());
-
-    boolean crayfishWhistled = true; // Если рак на горе свистнул
-
-    if (crayfishWhistled) {
-      context.setStrategy(new ConcreteStrategyB());
-    }
-
-    context.executeStrategy();
-  }
-}