It's still there but not labelled as such. It's a bit harder to press but not prohibitively so. For example, on a German keyboard you press Alt+5 for [ and Alt+9 for }.
The German Windows keyboard has those somewhere else for some reason though...
At least on a 'real' Norwegian keyboard {,[,] and } are on AltGr-7,8,9 and 0 respectively. I'm guessing it's the same on an Apple keyboard, but Apple just didn't draw the character on the keys for some reason.
Portugal, Norway, Germany, Belgium, France, Czech R, and Croatia specifically.