Bug 1379400 - remove upper limit on "sane" value for bytes received or sent. r=drno

We're not really gaining much information by checking for an upper limit on
the bytesReceived or bytesSent stat here.  This should help with
intermittent failures.

MozReview-Commit-ID: 5tPRKlaOYX6

--HG--
extra : rebase_source : fd6c570a5c0ca403e554ade533314bb85dcffa4e

dom/media/tests/mochitest/test_peerConnection_stats.html

@@ -425,13 +425,13 @@ var pedanticChecks = report => {
           + stat.nominated);
 
         // bytesSent
-        ok(stat.bytesSent > 20000 && stat.bytesSent < 800000,
-          stat.type + ".bytesSent is a sane number (20,000<>800,000)for a short test. value="
+        ok(stat.bytesSent > 20000,
+          stat.type + ".bytesSent is a sane number (>20,000) for a short test. value="
           + stat.bytesSent);
 
         // bytesReceived
-        ok(stat.bytesReceived > 20000 && stat.bytesReceived < 800000,
-          stat.type + ".bytesReceived is a sane number (20,000<>800,000) for a short test. value="
+        ok(stat.bytesReceived > 20000,
+          stat.type + ".bytesReceived is a sane number (>20,000) for a short test. value="
           + stat.bytesReceived);
 
         // lastPacketSentTimestamp