@xlayer that is fine, because even those less-than-perfect images still contain useful data for e.g. map editing. There is always the possibility for anyone to go the same path and take new photos in better conditions/quality.
If you have photos that are really such a bad quality that you can't even tell what is in the picture then you can ask for it to be deleted via the editor (https://help.mapillary.com/hc/en-us/articles/115001638129-Editing-sequences). But note that while you can delete your own contributions easily, this is not the case with those from other people (we are still working out the best way to handle those requests).