Hello,
I am not aware of any cancellation of the signage there (and neither is a friend of mine from the BBBike app) and the photos from https://www.openstreetmap.org/note/4151965 are not yet a year old. You are welcome to provide current photos that prove that there are no more 10 km/h signs there, alternatively I will check myself in the days to see if the signs have really been removed. If the signs are still there, the 10km/h applies all year round unless there should be an addition for a time restriction in the meantime.