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 (see
Packages that do not come with Emacs). 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.