If you need to edit the PDF file, you can also use PDFChef to do this. The simple online tools allow you to combine multiple PDFs into one document, extract pages to save as a separate file, rotate the pages of a PDF, reorder the pages in the document, remove one or more pages from the PDF.
The upload process is the same as creating a new PDF, from here, you can follow simple on-screen instructions to delete or edit the required pages.
Once you upload a multi page PDF, PDFChef will bring up a window showing you each of the pages. You can click one of the pages, and select editing tools including Rotate Left, Rotate Right, Delete, and even Add Files if you want to add additional pages. This allows you access to a full PDF editing suite right within your browser, for free. When you are done, simply press Save and Download to generate your new version of the document.