How to remove arrow on mobile hamburger menu that has no extra collection to it?

[AlexYZ]

Like below the picture for Hot Sale and New Arrival has no extra collection to it but the arrow on the menu still there. For other collection like home decor and others has extra collection to it and make sense to have the arrow. Website kawaiibonjour.com. Theme is expanse theme

[AlexYZ]

and mybe removable arrow after home decor like night light that have no extra collection as well.