Revert "Merge pull request #18 from alphagov/pin_epdq_module"

This reverts commit d89e6727a96afd606846d88e588d88d7e3f15f49, reversing
changes made to 76ec0604090ee7fff1a98c3c8bad4add9702eb6a.
Merge branch 'master' into winazure_preview_deployment