Drop redis lock expire time
Drop redis lock expire time

The lock is expired when something goes wrong.

Having a long lock, prevents us from doing a rollback as that requires
to obtain the lock and rollbacks are used to fix issues.

bitzesty/trade-tariff-backend,alphagov/trade-tariff-backend,bitzesty/trade-tariff-backend,bitzesty/trade-tariff-backend,leftees/trade-tariff-backend,alphagov/trade-tariff-backend,alphagov/trade-tariff-backend,leftees/trade-tariff-backend,leftees/trade-tariff-backend