revert: disable portuguese (#42508)

* revert: disable portuguese

First certification is not 100% yet. Shipped too soon. :(

* feat: enable portuguese curriculum

Curriculum can build in portuguese, leaving client disabled to
prevent language from appearing in nav bar.

* feat: move audited cert list

Moves the audited cert list to the config, instead of the utils.

utils/is-audited.js

@@ -1,46 +0,0 @@
-// this can go once all certs have been audited.
-
-// Currently the auditing is going through Crowdin, so once a cert has been 100%
-// proofread, we can add it in here. That means that translations can come
-// through from Crowdin whenever they are done, but we don't show them on the
-// client until we decide the entire cert is ready.
-
-// NOTE: certificates themselves (.yml files) are not currently being
-// translated, but when they are they can be included by adding 'certificates'
-// to the arrays below
-
-const auditedCerts = {
-  espanol: [
-    'responsive-web-design',
-    'javascript-algorithms-and-data-structures'
-  ],
-  chinese: [
-    'responsive-web-design',
-    'javascript-algorithms-and-data-structures',
-    'front-end-libraries',
-    'data-visualization',
-    'apis-and-microservices',
-    'quality-assurance'
-  ],
-  'chinese-traditional': [
-    'responsive-web-design',
-    'javascript-algorithms-and-data-structures',
-    'front-end-libraries',
-    'data-visualization',
-    'apis-and-microservices',
-    'quality-assurance'
-  ],
-  italian: [
-    'responsive-web-design',
-    'javascript-algorithms-and-data-structures'
-  ],
-  portuguese: ['responsive-web-design']
-};
-
-function isAuditedCert(lang, cert) {
-  if (!lang || !cert)
-    throw Error('Both arguments must be provided for auditing');
-  return lang === 'english' || auditedCerts[lang].includes(cert);
-}
-
-exports.isAuditedCert = isAuditedCert;