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This requires the Scalable Init Support addon.
This addon removes the various control tutorials that you’ve seen many times by now. Unlike setting "gameinstructor_enable 0", this still preserves the "weapon left in fabricator", "game saved" and map-specific messages. It also removes the holographic hand/multitool popups which appear if you take too long when solving puzzles, since they can be a bit naggy.
If you don’t wish to use Scalable Init Support, you’ll need to add "gameinstructor_reload_lessons" to your autoexec.cfg / skill.cfg file instead. That reloads the list from the copy in this addon.