I won a Judge's Choice ribbon at a national show with pleats on the back of my quilt (not just little ticks like yours). I was really disappointed with the pleats, but they were impossible to remove without redoing the whole quilt. I entered the quiilt anyway and was shocked to get a ribbon. They must not have examined the back.
I knew they were there, and it really bothered me, so I gave it away to the first person who said they liked the colors.
You are the only one who can decide if it is worth the effort to remove them.