Issue #1838310 by ParisLiakos, Jose Reyero: Remove st(), get_t() and for good.

core/includes/bootstrap.inc

core/includes/form.inc

core/includes/install.core.inc

core/includes/install.inc

core/includes/theme.maintenance.inc

core/includes/unicode.inc

core/lib/Drupal/Component/Gettext/PoStreamReader.php

core/lib/Drupal/Core/Database/Driver/mysql/Install/Tasks.php

core/lib/Drupal/Core/Database/Driver/pgsql/Install/Tasks.php

.../lib/Drupal/Core/Database/Driver/sqlite/Install/Tasks.php

core/lib/Drupal/Core/Database/Install/Tasks.php

core/lib/Drupal/Core/Locale/CountryManager.php

...pal/Core/StringTranslation/Translator/FileTranslation.php

core/modules/aggregator/aggregator.install

...ules/locale/lib/Drupal/locale/Tests/LocaleInstallTest.php

core/modules/locale/locale.batch.inc

core/modules/locale/locale.bulk.inc

core/modules/locale/locale.compare.inc

core/modules/locale/locale.fetch.inc

...s/shortcut/lib/Drupal/shortcut/Tests/ShortcutTestBase.php