In my opinion, if you're gonna have a clues page, I think the clue notif should stay! It prompts the player to check out their clues regularly and see what's changed; without the notif, it'd be easy to completely overlook the clues page. Players can still ignore it regardless, but having the notif helps lead the eye in a sense, especially for those actively interested in deeper knowledge of the game's world.
If you want to strike a balance between clarity and mystery, you could change the notif text into something more subtle. Something like 'You should remember that.' would toe that line. (That's just an example, of course; if you do change it up, feel free to make it something else and keep it a secret ;) )
Actually, checking out the clues system brought me to another error:
CHP3
- "You have some time before work.": If you check the clues page after picking one of the paths, returning to the game causes it to act as if you'd picked two paths and forces you to head to work.