cubicweb-neuroimaging #3442381 Scan: remove timepoint attribute [open]
Assignment already has a timepoint and Scan always has an Assignment. No need to duplicate.
Remember timepoint is not a datetime but a label such as "baseline", "remission", etc.
|done in||<not specified>|
|closed by||<not specified>|
|patch||[schema] remove timepoint attribute from Scan [applied]|