Merge pull request #19709 from benpicco/appendectomy

rdm/radio_hal: remove appendix A

Author: benpicco

doc/memos/rdm0002.md

@@ -1,7 +1,7 @@
 - RDM: 2
 - Title: The IEEE802.15.4 radio HAL
 - Authors: José Álamos
-- Status: Active
+- Status: Deprecated by RDM 0004
 - Type: Design
 - Created: March 2020