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

config/src/test/java/org/springframework/security/config/DataSourcePopulator.java

@@ -28,9 +28,6 @@ import org.springframework.util.Assert;
  */
 public class DataSourcePopulator implements InitializingBean {
 
-	// ~ Instance fields
-	// ================================================================================================
-
 	JdbcTemplate template;
 
 	public void afterPropertiesSet() {

config/src/test/java/org/springframework/security/config/FilterChainProxyConfigTests.java

@@ -53,9 +53,6 @@ public class FilterChainProxyConfigTests {
 
 	private ClassPathXmlApplicationContext appCtx;
 
-	// ~ Methods
-	// ========================================================================================================
-
 	@Before
 	public void loadContext() {
 		System.setProperty("sec1235.pattern1", "/login");