Remove 40k+ amazon placeholder images

### Problem

Followup to https://github.com/internetarchive/openlibrary/issues/9156

We should remove the "no image available" images from Amazon.
Like this one: https://ia800505.us.archive.org/view_archive.php?archive=/5/items/m_covers_0012/m_covers_0012_53.zip&file=0012539916-M.jpg

Here's a CSV of the covers with those dimensions https://github.com/user-attachments/files/16592832/covers_60_40.csv

I did a quick check and most I saw were the amazon image with md5 hash `681e43bb536038b0ecb97ed0c13b5948` but out of the 1000 I loaded I did see one that was different.

### Proposal & Constraints

### What is the proposed solution / implementation?
1. Calculate the md5 has of all the images in this CSV
2. Make a list of those with with the amazon image MD5 hash
3. interesect those cover IDs with the editions and works data dumps to figure out which editions/works need to be edited
4. Remove those covers
5. Update the import process so covers with the relevant `md5sum` value are not longer added.

### Leads

### Related files

### Stakeholders

@cdrini feel free to edit/improve this with your thoughts so this is ready for someone to work on 👍

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