This change removes a duplicated internal component used by automated website tours and relies on the existing shared version instead. It reduces maintenance complexity without changing the expected user experience.

In this commit, we remove the MacroEngine class which duplicates the
Macro class.

This update removes a duplicate internal component used to manage web tour macros, reducing maintenance complexity. Business users should not see any change in day-to-day behavior, but the cleanup helps keep the product easier to maintain and evolve.

[REF] web_tour: remove MacroEngine class
In this commit, we remove the MacroEngine class which duplicates the
Macro class.