Bug 40090: Disable v3 add-on blocklist for now

That's desktop-only as the v3 blocklist is not enabled on mobile yet,
see: https://bugzilla.mozilla.org/show_bug.cgi?id=1639050.

browser/app/profile/firefox.js

@@ -42,9 +42,9 @@ pref("extensions.getAddons.link.url", "https://addons.mozilla.org/%LOCALE%/firef
 pref("extensions.getAddons.langpacks.url", "https://services.addons.mozilla.org/api/v3/addons/language-tools/?app=firefox&type=language&appversion=%VERSION%");
 pref("extensions.getAddons.discovery.api_url", "https://services.addons.mozilla.org/api/v4/discovery/?lang=%LOCALE%&edition=%DISTRIBUTION%");
 
-// Use bloomfilters for the addons blocklist, instead of JSON only.
-pref("extensions.blocklist.useMLBF", true);
-pref("extensions.blocklist.useMLBF.stashes", true);
+// No bloomfilters for the addons blocklist for now, but JSON only.
+pref("extensions.blocklist.useMLBF", false);
+pref("extensions.blocklist.useMLBF.stashes", false);
 
 // The URL for the privacy policy related to recommended extensions.
 pref("extensions.recommendations.privacyPolicyUrl", "https://www.mozilla.org/privacy/firefox/?utm_source=firefox-browser&utm_medium=firefox-browser&utm_content=privacy-policy-link#addons");