Possible to remove the Asset Browser button from an Objectfield?

I am Writing a custom inspector for a particular class which requires a lot of references to scenes.

it uses the object field to enable dragging and dropping, however I don't want to display the small circle button (which opens the asset browser).

Ideally I want just the boxes to be visible with a small border between them (to look like a row of text fields.

Is it possible to disable or hide this (ugly) button in any way?