I totally respect that perspective, it’s certainly the least important scene of the episode.

The reason I think it’s worth keeping (in that position) is twofold:

Firstly but leastly, because it shows Grievous being “trained in your Jedi arts by Count Dooku”
Secondly and mostly, because in it, Dooku tells Grievous to use fear, to break the enemy before he engages them. And then, on Hypori, that’s exactly what Grievous does, to great effect. Now, Grievous did that because he was taught to, making him the well-trained warrior, and more importantly, Dooku is the calculating, smart, tactical commander. I think this pair of scenes is additive to both characters.