62:  How do I disable auto-save-mode?

  You probably don't want to do this, since auto-saving is useful,
  especially when Emacs or your computer crashes while you are editing a
  document.

  Instead, you might want to change the variable auto-save-interval, which
  specifies how many keystrokes Emacs waits before auto-saving.  Increasing
  this value forces Emacs to wait longer between auto-saves, which might
  annoy you less.

  You might also want to look into Sebastian Kremer's auto-save package,
  available from the Lisp Code Archive (see question 87).  This package
  also allows you to place all auto-save files in one directory, such as
  /tmp.

  To disable or change how auto-save-mode works, see "Auto Save" in the
  on-line manual.