Related to another comment posted earlier, this section [1] also notes that images in use by projects are considered automatically to be useful for an educational purpose, but those that are not and which are judged to be not educational can be deleted.

I've successfully nominated several hundred personal images of users for deletion using this criterion, as they were not in use.

The proper procedure if this image is disliked would be to see if it falls within one of the examples [2] of items that would be out of scope if unused.  It can then be nominated for deletion.

However, as already seen, whether an unused image is educational is subject to quite a bit of debate.


[1] http://commons.wikimedia.org/wiki/Commons:Project_scope#File_in_use_in_another_Wikimedia_project

[2] http://commons.wikimedia.org/wiki/Commons:Project_scope#Examples