Remove tw-translations

These will now be in scratch-l10n instead

src/lib/tw-translations/aliases.json

@@ -1,4 +0,0 @@
-{
-  "es": ["es", "es-419"],
-  "pt": ["pt", "pt-br"]
-}

src/lib/tw-translations/merge-translations.js

@@ -1,22 +0,0 @@
-import translations from './translations.json';
-import translationAliases from './aliases.json';
-
-const mergeMessages = messages => {
-    for (const language of Object.keys(translations)) {
-        if (language.startsWith('_')) {
-            continue;
-        }
-        const newMessages = translations[language];
-        const aliases = translationAliases[language] || [language];
-        for (const alias of aliases) {
-            const languageMessages = messages[alias];
-            if (languageMessages) {
-                for (const messageId of Object.keys(newMessages)) {
-                    languageMessages[messageId] = newMessages[messageId];
-                }
-            }
-        }
-    }
-};
-
-export default mergeMessages;

src/reducers/locales.js

@@ -4,10 +4,6 @@ import {localeData, isRtl} from 'scratch-l10n';
 import editorMessages from 'scratch-l10n/locales/editor-msgs';
 
 import {LANGUAGE_KEY} from '../lib/detect-locale.js';
-import mergeTranslations from '../lib/tw-translations/merge-translations.js';
-
-// tw: merge our translations into editorMessages
-mergeTranslations(editorMessages);
 
 addLocaleData(localeData);