No, by default the application doesn’t allow you to delete pages, but there is a trick. Open the PDF file (let’s say with 4 pages). Then go to Print and choose FoxIt Reader Printer. Select the pages box and enter the pages in your PDF. If you want to delete a page, simply left it out. To delete page 4, for example, enter 1-3. A new PDF will be generated only with the mentioned pages.