--- a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/HtmlConfiguration.java	Mon Sep 24 22:12:07 2018 -0700
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/HtmlConfiguration.java	Tue Sep 25 12:36:45 2018 +0530
@@ -209,12 +209,6 @@
     public HtmlVersion htmlVersion = null;
 
     /**
-     * Flag to enable/disable use of module directories when generating docs for modules
-     * Default: on (module directories are enabled).
-     */
-    public boolean useModuleDirectories = true;
-
-    /**
      * Collected set of doclint options
      */
     public Map<Doclet.Option, String> doclintOpts = new LinkedHashMap<>();
@@ -840,13 +834,6 @@
                     }
                     return true;
                 }
-            },
-            new XOption(resources, "--no-module-directories") {
-                @Override
-                public boolean process(String option, List<String> args) {
-                    useModuleDirectories = false;
-                    return true;
-                }
             }
         };
         Set<Doclet.Option> oset = new TreeSet<>();