Bug 1561435 - Format mfbt/, a=automatic-formatting

# ignore-this-changeset

Differential Revision: https://phabricator.services.mozilla.com/D35913

--HG--
extra : source : 7ca120632c21376ee34876363621931e5754442a

.eslintrc.js

@@ -45,7 +45,6 @@ module.exports = {
   "overrides": [{
       "files": [
         "devtools/**",
-        "mfbt/**",
         "mobile/**",
         "modules/**",
         "mozglue/**",

.prettierignore

@@ -40,7 +40,6 @@ toolkit/components/telemetry/datareporting-prefs.js
 toolkit/components/telemetry/healthreport-prefs.js
 
 # Ignore all top-level directories for now.
-mfbt/**
 mobile/**
 modules/**
 mozglue/**