[css-contain-3] Remove acknowledgements since they're in the target spec

Author: frivoal

css-contain-3/Overview.bs

@@ -119,36 +119,3 @@ Changes from <a href="https://www.w3.org/TR/css-contain-2/">CSS Containment Leve
 	* Introduces [=inline-size containment=].
 	* Defines the terms, properties, units, and at-rule
 		needed for [=Container Queries=]
-
-<h2 class="no-num" id="acknowledgments">Acknowledgments</h2>
-
-	Comments and previous work from
-	Adam Argyle,
-	Amelia Bellamy-Royds,
-	Anders Hartvoll Ruud,
-	Brian Kardell,
-	Chris Coyier,
-	Christopher Kirk-Nielsen,
-	David Herron,
-	Elika J. Etemad (fantasai),
-	Eric Portis,
-	Ethan Marcotte,
-	Geoff Graham,
-	Gregory Wild-Smith,
-	Ian Kilpatrick,
-	Jen Simmons,
-	Kenneth Rohde Christiansen,
-	L. David Baron,
-	Lea Verou,
-	Martin Auswöger,
-	Martine Dowden,
-	Mike Riethmuller,
-	Morten Stenshorne,
-	Nicole Sullivan,
-	Rune Lillesveen,
-	Scott Jehl
-	Scott Kellum,
-	Stacy Kvernmo,
-	Theresa O’Connor,
-	Una Kravets,
-	and many others have contributed to this specification.