Update pref description for auto-away timeout.

locales/en-US/chrome/ambassador.properties

@@ -1540,7 +1540,7 @@ pref.autoRejoin.help            = If this is turned on, Ambassador will try (onl
 pref.away.label                 = Away status
 pref.away.help                  =
 pref.awayIdleTime.label         = Auto-away timeout
-pref.awayIdleTime.help          = After how many minutes of inactivity Ambassador will set your status to "away". This only works on newer versions of &brandShortName;. Set to 0 to disable it.
+pref.awayIdleTime.help          = After how many minutes of inactivity Ambassador will set your status to "away". Set to 0 to disable it.
 pref.awayIdleMsg.label          = Auto-away message
 pref.awayIdleMsg.help           = The away message Ambassador will use when you go away.
 pref.awayNick.label             = Nickname (away)