src/jdk.compiler/share/classes/com/sun/tools/javac/main/Arguments.java

*** 850,862 ****
          String format = options.get(Option.DOCLINT_FORMAT);
          if (format != null) {
              doclintOpts.add(DocLint.XHTML_VERSION_PREFIX + format);
          }
  
-         // standard doclet normally generates H1, H2,
-         // so for now, allow user comments to assume that
-         doclintOpts.add(DocLint.XIMPLICIT_HEADERS + "2");
          return List.from(doclintOpts.toArray(new String[doclintOpts.size()]));
      }
  
      private boolean checkDirectory(Option option) {
          String value = options.get(option);
--- 850,859 ----