Institutional discrimination? No, of course not. But the popularity of "Adolf" as a first name for newborns declined considerably after 1942, and is practically extinct by now amongst younger Germans. However, there's still a considerable number of older Germans that bear this first name that was given to them at a time where it was completely normal. (You can see for yourself here on this German genealogy site. If you enter "Adolf" in the searching field, the site will create a map with the absolute or relative distribution of the name for you.)

Keep in mind that "Adolf" and its multiple variations might still be perfectly valid names in other Germanic languages like for example Swedish.