Disable preloading of URLs in ESR60 since it's useless in Tor Browser context
Relevent bugzilla: https://bugzilla.mozilla.org/show_bug.cgi?id=1348275
browser.urlbar.speculativeConnect.enabled = false
Relevent bugzilla: https://bugzilla.mozilla.org/show_bug.cgi?id=1348275
browser.urlbar.speculativeConnect.enabled = false