Remove dict unpacking refactor that doesn't work under Python 3.4.3
Remove dict unpacking refactor that doesn't work under Python 3.4.3

Additional unpacking functionality was added in Python 3.5 -
https://www.python.org/dev/peps/pep-0448/

The latest Python we can run in Elastic Beanstalk is 3.4.3

ONSdigital/eq-survey-runner,ONSdigital/eq-survey-runner,ONSdigital/eq-survey-runner,ONSdigital/eq-survey-runner