It's an intentional policy shift that has come not only as guidance to medical professionals, but as an awareness campaign (posters in pharmacies etc.) to the general public that most minor infections don't need antibiotics, and so ones that the body should be able to deal with on its own will no longer be prescribed antibiotics.

It used to be that they were prescribed much more freely, because on the level of an individual case it's unlikely to do any harm and might help speed up getting better, and it was an easy way for doctors to make patients feel cared for to send them off with a prescription. But sensibly that's been course corrected now.