If that is not the case with the title in question, I'm pretty sure it could and should be deleted. You can try and request deletion yourself. In order to do that, go to IMDb contact form, choose "IMDb Contributor", then "I need help and haven't submitted an update", then "Titles", then "Delete a title" and then "E-mail" in "Would you like to contact us?". Here's how deletion form looks like:
In "Reason for deletion" you may simply use the link to this very thread.