Alpine will abandon their works engine operation ahead of an anticipated switch to Mercedes power, the team announced earlier this week. It followed months of speculation and a formal review into the operation. F1 veteran Flavio Briatore joined Alpine in an advisory role back in May and there have been seismic changes to the organisation since. The team came to a mutual decision to part ways with Esteban Ocon, insisting it was unrelated to his collision with teammate Pierre Gasly at the Monaco Grand Prix. Reserve driver Jack Doohan will graduate to a full-time race seat in his stead. Meanwhile…