1. Make the epub in Pages without a cover image.
2. Place the cover image in the epub using Calibre.
3. Unzip the epub file with ePub Zip/Unzip. (The Mac's usual unzipping tools will only create new problems.)
4. Open the folder you just created, find OPS/toc.xhtml, and open it with a text editor like TextEdit. Delete
<nav epub:type="toc" id="toc">and
</nav>5. Open titlepage.xhtml. Delete
preserveAspectRatio="none"6. Save the changed files and rezip the folder with ePub Zip/Unzip.