A: There are several answers to this. The fastest way does not remove them, just makes it so you don’t see it all the time. You remove the drivers’ side sun visor from the rod (no tools needed, it just slides off with a little effort) and the passenger side sun visor. Then place the drivers side visor on the pass. side and place the pass. side on the drivers’ side. This just puts the sticker facing up unless you are using the visor.
Some have said they have stickers on both sides, so this won't work for you if that's the case. To remove, you have to determine if it is a sticker or a silkscreen type.
If it is just a sticker, use a hair drier to heat the sticker up and slowly peel the sticker off. It may leave a sticky residue, but that can be cleaned with an adhesive remover or something like WD-40.
If it is the silk-screened type, I can't really give a definite answer, I have not personally dealt with it. I have silk-screened visors, but I did the above flipping of the sun visors. I have been told that using nail polish remover works, but it takes time. Do not use straight acetone, it can damage your plastic visors.