When I do pairwise comparisons of multiple groups, a large number of non-significant results appear. Like this:

These result often change the scale of the picture, making the Y-axis very long.
I have tried to delete these non-significant comparisons from the list provided for Comparisons, but this does not apply to facets. Like this:

Some groups may differ significantly from each other in different facets and therefore cannot be removed from the list.
How can I hide these no-significant comparisons?