Remove most window auto deletions.

Remove most window auto deletions.

* window.el (window-auto-delete): Remove.
(window-deletable-p): Remove argument FORCE.  Don't deal with
dedicatedness and previous buffers.
(switch-to-prev-buffer): Don't delete window.
(delete-windows-on): Delete a window's frame if and only if the
window is dedicated.
(replace-buffer-in-windows): Delete buffer's window or frame if
and only if window is dedicated.
(quit-window): Handle quit-restore as before last change.
(bury-buffer): Delete window only if window-deletable-p returns
t.