How can I remove latex paint from wall?
Sure, how much effort would you like to put in to it?

The easiest way is to paint over it.

Then there is manually or machine sanding all of the paint off.

Another option is using a paint stripper and chemically removing the paint.

Both of these last methods are quite labor intensive and make a mess.

I would buy some paint samples. Paint some scrap drywall or pieces of white cardboard. Choose a complementary color or contrasting color. Then paint one entire wall break-to-break. Or just repaint the entire room.

Good luck!