bug#7865: 24.0.50; doc of display-buffer-reuse-frames

[Chong Yidong]

"Drew Adams" <drew.adams@oracle.com> writes:

> Each of the other spots describes the option without mentioning this.
> Either add this info to #2 and #3 or reduce/remove their descriptions of
> the option and just cross-reference to the full description in #1 that
> does mention this.

Closing, since display-buffer-reuse-frames has been obsoleted.