Yes, that is what the script does.. Why do you want to remove it?
Oh sorry, I realize now what you mean. It's adding duplicates and it shouldn't do that.
So looking around it seems to only be a problem for this item (as far as I did look at least)
It's not because there are two entries for the brand:wikidata is it:
https://nsi.guide/?t=brands&k=shop&v=confectionery&tt=Q98456614
But both linking to the same item, compared to e.g. Tesco, which have that, but not in the same category:
https://nsi.guide/index.html?t=brands&k=shop&v=convenience&tt=tesco
Nope, because M&S does that properly:
https://nsi.guide/index.html?t=brands&k=shop&v=department_store&tt=marks
Although that is the only one I can quickly find with brand and category matching identically.
The issue seems to be caused by this line:
https://github.com/osmlab/name-suggestion-index/blob/56b287fbaec00c3d8c1d0eb02abb733cee51c04a/scripts/build_wikidata.js#L365-L366
Where we fetch all the existing P8253, the "simplify" part is oversimplifying them and only returning the first one. 馃槅
Turns out that simplify was only returning one because the first one has a "preferred" rank. This makes sense!
The fix is to pass the keepNonTruthy: true option, to ensure we get all the claims...

Thanks to everybody!