Remove grid, background color, and top and right borders from ggplot2

Question

I would like to reproduce the plot immediately below by using ggplot2. I can come close, but cannot remove the top and right borders. Below I present several attempts usin

Answer 1

The above options do not work for maps created with sf and geom_sf(). Hence, I want to add the relevant ndiscr parameter here. This will create a nice clean map showing only the features.

library(sf)
library(ggplot2)

ggplot() + 
  geom_sf(data = some_shp) + 
  theme_minimal() +                     # white background
  theme(axis.text = element_blank(),    # remove geographic coordinates
        axis.ticks = element_blank()) + # remove ticks
  coord_sf(ndiscr = 0)                  # remove grid in the background