gg_*: remove axis ticks for discrete x/y scales

[davidhodge931]

library(ggplot2)
library(dplyr)
library(palmerpenguins)

set_blanket()

p <- penguins |>
  gg_bar(
    y = species,
    width = 0.75,
  )

p

#if y_orientation & y_scale_type == "discrete"
p + theme(axis.ticks.y = element_blank())

p <- penguins |>
  gg_bar(
    x = species,
    width = 0.75,
  )

p

#if x_orientation & x_scale_type == "discrete"
p + theme(axis.ticks.x = element_blank())

[davidhodge931]

Sorted :)