How can you delete pages from a PDF file if you don’t have Adobe Acrobat?
Download PDFCreator from SourceForge. It installs as a printer. It lets you create PDFs from any application by selecting PDFCreator as your “printer.” To delete pages from an existing PDF, open the PDF in Adobe Reader and print to PDFCreator the pages you don’t want to delete.
I don’t have a lot of experience with PDFCreator; I just downloaded it today. But it looks good and it worked well for what I was trying to do.
Update: I tried pdftk, recommended in the comments, and it works well. It’s a command line program with more features than PDFCreator.