In December 2009, Google began this big Google Maps business push to get businesses to start using QR codes. It was fairly popular, many businesses who did not get a QR code decal wanted them but Google couldn’t easily send them out. So in April 2010, Google added a way for business owner to print their own Google QR code decals.

But now, they are gone. You can no longer print your Google Places decal and QR code from your edit business listings within Google Places. It is gone.

Mike Blumenthal noted an official statement from Google saying:

Is that the end of QR codes? Will you miss them? Have you ever even used them?

Forum discussion at Google Places Help.