Since Adobe designed PDFs to faithfully and accurately print a document, it has always been a terrible ebook format.
Having said that, it is of course ubiquitous in academic publication databases due to that characteristic, although modern users nowadays don't routinely physically print them. They simply view them, which should be identical to "print preview" by design.
If you cannot actually delete the images (because: see above), perhaps an acceptable alternative would be to use available utilities to reduce the quality of the images, and change them to grayscale.
That would drastically reduce the file size of your PDFs, which is often the motivation to remove the images. It is possible that changing the image attributes might disrupt the "flow" of the PDF document that you prize. Only trial-and-error testing of different combinations of criteria will tell you if that is so.
DaltonST
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