They postponed an event because a parent complained. The school board said from the beginning they intended to bring the book back and reschedule the authors virtual visit. It's basically that same series of events every time: school puts in effort to provide materials about diversity and race relations, people have concerns about the material (sometimes justified, sometimes not), school temporarily stops promoting the books, internet reports that as "banning books". "Stopped explicitly encouraging children to read something" is not "banned", no matter how many times they say it.