Bug 629893 - Remove unused props.policy.label. r=gavin

--HG--
extra : rebase_source : e65538722161b0c00d2e8461849af476f52aba83

toolkit/locales/en-US/chrome/cookie/cookieAcceptDialog.dtd

@@ -4,7 +4,6 @@
 <!ENTITY     props.path.label               "Path:">
 <!ENTITY     props.secure.label             "Send For:">
 <!ENTITY     props.expires.label            "Expires:">
-<!ENTITY     props.policy.label             "Policy:"> 
 
 <!ENTITY     button.allow.label             "Allow">
 <!ENTITY     button.allow.accesskey         "A">