Revert setting no_proxies_on to an empty string

This breaks certain configurations and actually doesn't give us much benefit; reverting to the Firefox/Thunderbird default.

Revert setting no_proxies_on to an empty string
b2f6a45b · Sukhbir Singh · 9204ddc2 · b2f6a45b
Commit b2f6a45b authored Jul 2, 2016 by Sukhbir Singh
--- a/components/torbirdy.js
+++ b/components/torbirdy.js
@@ -37,8 +37,6 @@ var TorBirdyPrefs = {

  // Use a manual proxy configuration.
  "network.proxy.type": 1,
-  // https://bugs.torproject.org/10419
-  "network.proxy.no_proxies_on": "",
  // Restrict TBB ports.
  "network.security.ports.banned": "9050,9051,9150,9151",
  // Number of seconds to wait before attempting to recontact an unresponsive proxy server.