Revert "Merge branch 'hotfix/wishlist-cookie-gunicorn-unicode-error' into develop"

This reverts commit ecb9bef85c0ccd5e0fd8eedd1a632221a2a178c4, reversing
changes made to 55f712aefff74fa899418be4ffead036dbadaffa.

The hotfix should no longer be needed after a Mezzanine fix.