Remove root redirect method

Deleted the method that redirected from root endpoint to the greeting endpoint. Instead, visitors should see a landing page when accessing the base URL.

src/main/java/ch/ethz/library/devboxspringdemo/GreetingController.java

@@ -5,19 +5,13 @@
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
-import org.springframework.web.servlet.view.RedirectView;
 
 @RestController
 public class GreetingController {
 
     private static final String template = "Hello, %s!";
     private final AtomicLong counter = new AtomicLong();
 
-    @GetMapping("/")
-    public RedirectView redirectFromRootToDefaultEndpoint() {
-        return new RedirectView("/greeting");
-    }
-
     @GetMapping("/greeting")
     public Greeting greeting(@RequestParam(value = "name", defaultValue = "World") String name) {
         return new Greeting(counter.incrementAndGet(), String.format(template, name));