[FIX] l10n_lt: remove duplicate translation

Translation files contained multiple instances of the same reference.
This caused a traceback when loading the translations.

closes odoo/odoo#78419

Fixes: #68552
X-original-commit: afaff8fc
Signed-off-by: Josse Colpaert <jco@openerp.com>
Signed-off-by: oco-odoo <oco-odoo@users.noreply.github.com>