Bump redis-store to 1.1.6 and remove redis-store-fix-expiry
According to this https://github.com/redis-store/redis-store/compare/v1.1.4...v1.1.6 and my manual tests the monkey patch for redis-store is no longer required
According to this https://github.com/redis-store/redis-store/compare/v1.1.4...v1.1.6 and my manual tests the monkey patch for redis-store is no longer required