Remove new feature in LinguaPlone that shows always the selection of all languages

from plone.app.i18n.locales.browser.selector import LanguageSelector
from plone.app.layout.navigation.interfaces import INavigationRoot
from zope.component import getMultiAdapter

from Acquisition import aq_chain
from Acquisition import aq_inner
from Products.CMFCore.interfaces import ISiteRoot
from Products.Five.browser.pagetemplatefile import ZopeTwoPageTemplateFile
from ZTUtils import make_query

from Products.LinguaPlone.interfaces import ITranslatable

class TranslatableLanguageSelector(LanguageSelector):
    """Language selector for translatable content.
    """

    render = ZopeTwoPageTemplateFile('selector.pt')

    def available(self):
        if self.tool is not None:
            selector = self.tool.showSelector()
            languages = len(self.tool.getSupportedLanguages()) > 1
            return selector and languages
        return False



    def languages(self):
        results = LanguageSelector.languages(self)
        translatable = ITranslatable(self.context, None)
        if translatable is not None:
            translations = translatable.getTranslations()
        else:
            translations = []

        for data in results:
            data['translated'] = data['code'] in translations
            if data['translated']:
                trans = translations[data['code']][0]
                state = getMultiAdapter((trans, self.request),
                        name='plone_context_state')
                data['url'] = state.view_url() + '?set_language=' + data['code']
            else:
                state = getMultiAdapter((self.context, self.request),
                        name='plone_context_state')
                try:
                    data['url'] = state.view_url() + '?set_language=' + data['code']
                except AttributeError:
                    data['url'] = self.context.absolute_url() + '?set_language=' + data['code']

        return results