Change description; remove useless code

Author: Andreas Winter

spring-ws-security/src/main/java/org/springframework/ws/soap/security/wss4j2/Wss4jSecurityInterceptor.java

@@ -219,13 +219,12 @@ public Wss4jSecurityInterceptor(WSSecurityEngine securityEngine) {
 		this.securityEngine = securityEngine;
 	}
 
-		/**
+	 /**
 	 * Certificate constraints which will be applied to the subject DN of the certificate used for
 	 * signature validation, after trust verification of the certificate chain associated with the
 	 * certificate.
 	 *
-	 * @param patterns A comma separated String of regular expressions which will be applied to
-	 *                 the subject DN.
+	 * @param patterns A list of regex patterns which will be applied to the subject DN.
 	 *
 	 * @see <a href="https://ws.apache.org/wss4j/config.html">WSS4J configuration: SIG_SUBJECT_CERT_CONSTRAINTS</a>
 	 */
@@ -923,14 +922,4 @@ protected void cleanUp() {
 			}
 		}
 	}
-
-	private List<Pattern> parseSubjectCertConstrainsAsPatternList() {
-		String commaSeparatedCertConstraintPatterns = handler.getStringOption(ConfigurationConstants.SIG_SUBJECT_CERT_CONSTRAINTS);
-		if (commaSeparatedCertConstraintPatterns != null && !commaSeparatedCertConstraintPatterns.isEmpty()) {
-			String[] patternStrings = commaSeparatedCertConstraintPatterns.split(",");
-			return unmodifiableList(Arrays.stream(patternStrings).map(Pattern::compile).collect(Collectors.toList()));
-		} else {
-			return emptyList();
-		}
-	}
 }