RELEASING: Drop inclusion of boilerplate in news messages

Looking back at past release announcements, it's been a long time since
we included the About Cairo bits.  This info is easily located on the
website and elsewhere, no need for the redundant data in the
announcement too.

RELEASING

@@ -181,14 +181,10 @@ Here are the steps to follow to create a new cairo release:
 	cairo@cairographics.org, gnome-announce-list@gnome.org and
 	ftp-release@lists.freedesktop.org (pr@lwn.net as well for major
 	releases) to announce the new release using the text provided from
-	"make release-publish", adding the excerpt from NEWS, your
-	signature, followed by the standard "What is cairo" and "Where to
-	get more information about cairo" blurbs from README, and finally
+	"make release-publish", adding the excerpt from NEWS and
 	the shortlog of all changes since last release, generated by:
 
 		git shortlog ${LAST_RELEASE}...
 
 11) Add the announcement to the NEWS page and the front page.
 
-	(just the parts before your signature).
-