Sometimes the “To [Inst]” part of the Instrument Change process is only a couple of bars away from the name of the instrument, in which case, they are really too close together in a part to be useful—they just add clutter.
To delete one, the Dorico Version History suggests using the Custom Text property by changing it to a space. If for some reason you don’t like that, you can also set the Custom Scale property to zero.
I have no idea if anything makes one better than the other, but I thought I’d mention it.