Fix duplicate menu items

website/modify_build.rb

@@ -57,6 +57,7 @@ class ModifyBuild
     text = include_javascript(text)
     text = add_text_to_coverpage(text, extract_file_from_path(filename))
     text = fix_js_dependency_link(text)
+    text = fix_list_of_tables_figures_duplicates(text)
     File.open(filename, "w") {|file| file.puts text }
   end
 
@@ -499,6 +500,17 @@ class ModifyBuild
     }
   end
 
+  # For some reason the list of figures and tables is displayed twice in the
+  # menu. Fix this.
+  def fix_list_of_tables_figures_duplicates(text)
+    doc = build_doc(text)
+    content = doc.css(".menu-items > .likechapterToc")
+    content.each do |node|
+      node.remove
+    end
+    doc.to_html
+  end
+
   # For some reason the depdency is missing a // in the url.
   def fix_js_dependency_link(text)
     text.gsub("https:/cdn.jsdelivr.net", "https://cdn.jsdelivr.net")