Is it safe to cut a bit off this stringer?

[redhexagonal]

I want to put some trim along the top of tuis stringer, but this part has 3 sections and it would look better and be easier if I reduced it to two sections. Is it safe to trim the part above the green tape off the top of the stringer? It would be up to 8mm at most.

 

[freddiemercurystwin]

Yes