label_outer() should remove inner minor ticks too.

[anntzer]

Minimal example:

fig, axs = plt.subplots(2, 2, sharex=True, sharey=True)
axs[0, 0].set(xscale="log", yscale="log", xlim=(1, 10))
for ax in axs: ax.label_outer()

Also, do not switch back on visibility of outer offset text if it was
not visible before.

[tacaswell]

Didn't we already do this?

[anntzer]

Nope (see example; should also be clear from the earlier implementation). Probably not noticed earlier because this only affects log-scale plots by default (linear scales default to no minor grid).

[tacaswell]

👍 Now understand