Remove a NEVER() macro in ALTER TABLE due to an

obscure case of a nested CTE inside an UPDATE within a
trigger.  dbsqlfuzz e89174cbfad2d904f06b5e24df0a22510b6a1c1e

FossilOrigin-Name: 9e2f06b84f9942772c30bed2ac71b3296c9adf9661dbf8916d56996253ee8d28