Duplicates not deleted for tv show Lock Up

In the following submissions, I've tried to delete duplicated posters for Lock Up (https://www.imdb.com/title/tt0052485/mediaindex/). Am I to assume that once again, these are unique cases that can't be deleted? #250411-180327-308402 #250411-180339-985902 #250411-180350-314402 #250417-163204-386602 #250417-163221-621002 #250417-163231-855302