How can I get rid of the annoying warnings when I open a file that has a .swp file?
Use the short message option in your ~/.vimrc:
set shortmess=AWhich is also the default when running POSIX mode.
However, do not do this: it's like removing your car's air bags to increase fuel efficiency. In the long run, you'll spend more time recovering than you ever did answering the question.
