Remove my (unneeded and broken) package clean up.

package.el used to leave autoload files open after installing. It
doesn't any more, but my code to clean them up does break stuff. So it's
gone.
Use smartparen and company mode.

smartparen replaces paredit and electric-pair mode.

company-mode should mean I don't have to type as much once I get it configured.
Helpers for my org backed blog.