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

openid/src/test/java/org/springframework/security/openid/MockOpenIDConsumer.java

@@ -26,9 +26,6 @@ import javax.servlet.http.HttpServletRequest;
  */
 public class MockOpenIDConsumer implements OpenIDConsumer {
 
-	// ~ Instance fields
-	// ================================================================================================
-
 	private OpenIDAuthenticationToken token;
 
 	private String redirectUrl;
@@ -49,9 +46,6 @@ public class MockOpenIDConsumer implements OpenIDConsumer {
 		this.token = token;
 	}
 
-	// ~ Methods
-	// ========================================================================================================
-
 	public String beginConsumption(HttpServletRequest req, String claimedIdentity, String returnToUrl, String realm) {
 		return redirectUrl;
 	}

openid/src/test/java/org/springframework/security/openid/OpenIDAuthenticationProviderTests.java

@@ -43,14 +43,8 @@ import org.springframework.security.core.userdetails.UserDetailsService;
  */
 public class OpenIDAuthenticationProviderTests {
 
-	// ~ Static fields/initializers
-	// =====================================================================================
-
 	private static final String USERNAME = "user.acegiopenid.com";
 
-	// ~ Methods
-	// ========================================================================================================
-
 	/*
 	 * Test method for
 	 * 'org.springframework.security.authentication.openid.OpenIDAuthenticationProvider.