Bug 1571934 - Remove redundant security.tls.enable_0rtt_data definition. r=mbirghan

It's defined first as false, and again later in the file as true. This patch
removes the first definition, which is currently overridden by the second.

Depends on D40919

Differential Revision: https://phabricator.services.mozilla.com/D40920

--HG--
extra : moz-landing-system : lando

modules/libpref/init/all.js

@@ -19,7 +19,6 @@ pref("security.tls.version.min", 1);
 pref("security.tls.version.max", 4);
 pref("security.tls.version.fallback-limit", 4);
 pref("security.tls.insecure_fallback_hosts", "");
-pref("security.tls.enable_0rtt_data", false);
 // Turn off post-handshake authentication for TLS 1.3 by default,
 // until the incompatibility with HTTP/2 is resolved:
 // https://tools.ietf.org/html/draft-davidben-http2-tls13-00