Hello hello! Thank you for this question! ^^
Sometimes scenes that seem to have been removed are actually just placed elsewhere in the story, but I do know that, if there is a necktie interaction between Riddle and Yuuya, it is not in its original place!
The scene that originally contained the necktie interaction (which was faithfully recreated from the same scene in the game) can be read here:
https://twitter.com/YuuRei20/status/1748254938587922856
It was rewritten so that the prefect meets with Ace and Deuce, not Cater and Riddle, though Riddle is discussed ^^ It was changed into an opportunity for Yuuya to reflect on Riddle's true intentions vs. how he is being perceived through the lens of his past mistakes. Am currently rereading the novel and will be on the look out for this scene, to translate if it does appear!