Remove superfluous comments

Use '^\s+//\ \~\ .*$' and '^\s+//\ ============+$' regular expression
searches to remove superfluous comments.

Prior to this commit, many classes would have comments to indicate
blocks of code (such as constructors/methods/instance fields). These
added a lot of noise and weren't all that helpful, especially given
the outline views available in most modern IDEs.

Issue gh-8945

samples/xml/contacts/src/test/java/sample/contact/ContactManagerTests.java

@@ -44,14 +44,11 @@ import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 		"/applicationContext-common-business.xml" })
 @RunWith(SpringJUnit4ClassRunner.class)
 public class ContactManagerTests {
-	// ~ Instance fields
-	// ================================================================================================
+
 
 	@Autowired
 	protected ContactManager contactManager;
 
-	// ~ Methods
-	// ========================================================================================================
 
 	void assertContainsContact(long id, List<Contact> contacts) {
 		for (Contact contact : contacts) {