diff --git a/browser/components/help/locale/en-US/firebird-glossary.rdf b/browser/components/help/locale/en-US/firebird-glossary.rdf
deleted file mode 100644
index 3ffeacf5829d..000000000000
--- a/browser/components/help/locale/en-US/firebird-glossary.rdf
+++ /dev/null
@@ -1,74 +0,0 @@
-<?xml version="1.0"?>
-
-<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-         xmlns:nc="http://home.netscape.com/NC-rdf#">
-
-<!--  HELP Glossary SECTION -->
-  <rdf:Description about="urn:root" nc:base="chrome://help/locale/glossary.xhtml">
-    <nc:subheadings>
-      <rdf:Seq>
-        <rdf:li> <rdf:Description nc:name="authentication" nc:link="glossary.xhtml#authentication"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="bookmark" nc:link="glossary.xhtml#bookmark"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Bookmarks Toolbar" nc:link="glossary.xhtml#Bookmarks_Toolbar"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="cache" nc:link="glossary.xhtml#cache"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="certificate" nc:link="glossary.xhtml#certificate"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="cipher" nc:link="glossary.xhtml#cipher"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="client" nc:link="glossary.xhtml#client"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="cookie" nc:link="glossary.xhtml#cookie"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Cookie Manager" nc:link="glossary.xhtml#Cookie_Manager"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="cryptographic algorithm" nc:link="glossary.xhtml#cryptographic_algorithm"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="cryptography" nc:link="glossary.xhtml#cryptography"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="decryption" nc:link="glossary.xhtml#decryption"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="digital ID" nc:link="glossary.xhtml#digital_ID"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="digital signature" nc:link="glossary.xhtml#digital_signature"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="distinguished name (DN)" nc:link="glossary.xhtml#distinguished_name"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="eavesdropping" nc:link="glossary.xhtml#eavesdropping"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="encryption" nc:link="glossary.xhtml#encryption"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Extensible Stylesheet Language Transformation (XSLT)" nc:link="glossary.xhtml#XSLT"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Extensible Markup Language (XML)" nc:link="glossary.xhtml#XML"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="File Transfer Protocol (FTP)" nc:link="glossary.xhtml#File_Transfer_Protocol"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="FIPS PUBS 140-1" nc:link="glossary.xhtml#FIPS_PUBS_140-1"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="foreign cookie" nc:link="glossary.xhtml#foreign_cookie"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Form Manager" nc:link="glossary.xhtml#Form_Manager"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="helper application" nc:link="glossary.xhtml#helper_application"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="home page" nc:link="glossary.xhtml#home_page"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Hypertext Markup Language (HTML)" nc:link="glossary.xhtml#Hypertext_Markup_Language"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="implicit consent" nc:link="glossary.xhtml#implicit_consent"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Internet Message Access Protocol (IMAP)" nc:link="glossary.xhtml#IMAP_glossary"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Internet" nc:link="glossary.xhtml#Internet"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Internet protocol address (IP address)" nc:link="glossary.xhtml#Internet_protocol_address"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Java" nc:link="glossary.xhtml#Java"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="JavaScript" nc:link="glossary.xhtml#JavaScript"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="key" nc:link="glossary.xhtml#key"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Lightweight Directory Access Protocol (LDAP)" nc:link="glossary.xhtml#LDAP_glossary"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Location Bar" nc:link="glossary.xhtml#location_bar"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="master password" nc:link="glossary.xhtml#master_password"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Navigation Toolbar" nc:link="glossary.xhtml#navigation_toolbar"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="object signing" nc:link="glossary.xhtml#object_signing"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="object-signing certificate" nc:link="glossary.xhtml#object-signing_certificate"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="password-based authentication" nc:link="glossary.xhtml#password-based_authentication"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Password Manager" nc:link="glossary.xhtml#Password_Manager"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="PKCS #11" nc:link="glossary.xhtml#PKCS_11"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Platform for Privacy Preferences (P3P)" nc:link="glossary.xhtml#platform_for_privacy_preferences"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="plug-in" nc:link="glossary.xhtml#plug-in"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Post Office Protocol (POP)" nc:link="glossary.xhtml#POP_glossary"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="private key" nc:link="glossary.xhtml#private_key"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="proxy" nc:link="glossary.xhtml#proxy"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="search engine" nc:link="glossary.xhtml#search_engine"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Secure Sockets Layer (SSL)" nc:link="glossary.xhtml#Secure_Sockets_Layer"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="server" nc:link="glossary.xhtml#server"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="SSL" nc:link="glossary.xhtml#SSL"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Status Bar" nc:link="glossary.xhtml#Status_Bar"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="TCP" nc:link="glossary.xhtml#TCP_IP"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="third-party cookie" nc:link="glossary.xhtml#third-party_cookie"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="TLS" nc:link="glossary.xhtml#TLS"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="TCP/IP (Transmission Control Protocol/Internet Protocol)" nc:link="glossary.xhtml#TCP_IP"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="Uniform Resource Locator (URL)" nc:link="glossary.xhtml#Uniform_Resource_Locator"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="web page" nc:link="glossary.xhtml#web_page"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="web site" nc:link="glossary.xhtml#web_site"/> </rdf:li>
-        <rdf:li> <rdf:Description nc:name="World Wide Web" nc:link="glossary.xhtml#World_Wide_Web"/> </rdf:li>
-      </rdf:Seq>
-    </nc:subheadings>
-  </rdf:Description>
-
-</rdf:RDF>
\ No newline at end of file