It’s not a census year (only on the 10s in the US) and I’ve been involved in politics for more than three decades and the federal census has never been used to remove anyone from the voter rolls anywhere I’ve been. The personal data is not publicly available for 70 years except as anonymized, abstracted data.
EDIT: I did double-check myself and yeah, the Fed census has no impact on voter rolls. There are some places that do a city/town census - especially in Massachusetts - where you can be marked as “inactive” if you don’t complete a local census. You can still cast a ballot and are still on the rolls, but it will require some assertion that you still live in the same residence. But that’s a pretty limited edge case.