Removing ratified warning and copyright

As the whole spec is ratified and copyright applies to the whole document, removing from this chapter.

src/zawrs.adoc

@@ -1,21 +1,5 @@
 == RISC-V Wait-on-Reservation-Set (Zawrs) extension
 
-// Preamble
-[WARNING]
-.This document is in the link:http://riscv.org/spec-state[Ratified]
-====
-No changes are allowed. Any desired or needed changes can be the subject of a
-follow-on new extension. Ratified extensions are never revised
-====
-
-=== Copyright and license information
-This specification is licensed under the Creative Commons 
-Attribution 4.0 International License (CC-BY 4.0). The full 
-license text is available at
-https://creativecommons.org/licenses/by/4.0/.
-
-Copyright 2022 by RISC-V International.
-
 === Contributors
 
 This RISC-V specification has been contributed to directly or indirectly by: