To uninstall EagleFiler, drag its application file to the trash.
Although you will no longer be able to open your libraries with EagleFiler, the files in the libraries will remain accessible in the Finder. Next to each library is a folder called Files (which contains the files and folders in the library) and a folder called Notes (which contains any notes that you’ve added).
To remove EagleFiler from the PDF button-menu in the Print dialog, drag the file:
/Users/<username>/Library/PDF Services/Save PDF to EagleFiler
to the trash. (To open the Library folder under Mac OS X 10.7 Lion, go to the Go menu in the Finder and hold down the Option key.)