remove uneeded "@since TODO"

core/src/main/java/jenkins/util/xml/RestrictiveEntityResolver.java

@@ -11,8 +11,6 @@ import java.io.IOException;
 /**
  * An EntityResolver that will fail to resolve any entities.
  * Useful in preventing External XML Entity injection attacks.
- *
- * @since TODO
  */
 @Restricted(NoExternalUse.class)
 public final class RestrictiveEntityResolver implements EntityResolver {

core/src/main/java/jenkins/util/xml/XMLUtils.java

@@ -22,7 +22,6 @@ import javax.xml.transform.sax.SAXTransformerFactory;
 
 /**
  * Utilities useful when working with various XML types.
- * @since TODO
  */
 @Restricted(NoExternalUse.class)
 public final class XMLUtils {