Remove superfluous comments

Remove a few comments that previously add noise but don't offer a great
deal of value.

Issue gh-8945

samples/boot/oauth2resourceserver-webflux/src/integration-test/java/sample/ServerOAuth2ResourceServerApplicationITests.java

@@ -55,8 +55,6 @@ public class ServerOAuth2ResourceServerApplicationITests {
 				.expectBody(String.class).isEqualTo("Hello, subject!");
 	}
 
-	// -- tests with scopes
-
 	@Test
 	public void getWhenValidBearerTokenThenScopedRequestsAlsoWork() {