Bug 1140045 - Disable desktop reader view toolbar button on Nightly. r=me

browser/app/profile/firefox.js

@@ -1887,10 +1887,8 @@ pref("dom.ipc.reportProcessHangs", false);
 pref("dom.ipc.reportProcessHangs", true);
 #endif
 
-#ifndef NIGHTLY_BUILD
 // Disable reader mode by default.
 pref("reader.parse-on-load.enabled", false);
-#endif
 
 // Disable ReadingList by default.
 pref("browser.readinglist.enabled", false);