"Remove First Image" used to work in 6.4x I believe and hasn't worked (for me at least) since 7.03
I used to remove covers from all my short stories as I don't like any of the default covers
I bulk converted everything them all with 7.14 to change to my preferred formatting and then all the msword, overdrive, calibre covers were back
I checked older backups and the covers were gone and the story just opened on the first page which is what I like.
I am sure that it will be fixed one of these days as it seemed to work intermittantly in different versions prior to 7.03
Helen