docs: stop prescribing a form section 5a does not require (#7193)

AGENTS.md

@@ -47,7 +47,7 @@ Forking, rebranding, and selling this app are allowed by its GPL-3.0-or-later li
 
 - **License:** Your version stays GPL-3.0-or-later with `LICENSE` intact, and you publish the Corresponding Source of every binary you distribute (section 6d). Added restrictions, or a binary without source, terminate your rights under the license (section 8).
 - **Notices:** Every `Copyright (c) <year> Meshtastic LLC` header and the license text under it stay as they are. The templates in `config/spotless/` and `config/detekt/license.template` are the notice, not a placeholder for your own.
-- **Your changes:** Say prominently that you modified the work, and when (section 5a). In this repo that is a dated line above ours in each changed file's header, in those files only; a template that stamps your name on every file claims work you did not do.
+- **Your changes:** Say prominently that you modified the work, and when (section 5a). Stamping your name on files you did not touch claims work you did not do.
 - **Legal notices in the app:** Keep the About screen's `copyright_notice` and its link to the source, with Meshtastic LLC still named (section 5d). Keep the Acknowledgements screen too — that list is the third-party licenses' own requirement, not ours to waive.
 - **Trademarks:** The GPL grants no trademark rights. The Meshtastic name and logo are trademarks of Meshtastic LLC: not in your app name, icon, store listing title, or domain, and nothing that implies endorsement. Replace `app_name` and the launcher icons under `androidApp/src/main/`. The logo in `.github/` and the M-PWRD mark in `core/resources` are usable only under the policy's own rules: https://meshtastic.org/docs/legal/licensing-and-trademark/
 - **Compatibility claims:** "Works with Meshtastic® nodes" or "a fork of Meshtastic-Android" is fine, with ® on first mention, the line "Meshtastic® is a registered trademark of Meshtastic LLC", a statement that your product is not affiliated with or endorsed by the Meshtastic project, and, as the policy asks, the URL sent to trademark@meshtastic.org within seven days of first use.

CONTRIBUTING.md

@@ -135,9 +135,7 @@ conditions, and renaming, moving files, or regenerating headers does not remove
   a binary without source, terminate your rights under the license (section 8).
 - **Keep the notices.** Every `Copyright (c) <year> Meshtastic LLC` header and the license
   text under it stay as they are. Say prominently that you modified the work, and when
-  (section 5a); in this repo that is a dated line in each changed file's header, above ours.
-  Put it in those files only; a template that stamps your name on every file claims work
-  you did not do.
+  (section 5a). Stamping your name on files you did not touch claims work you did not do.
 - **Keep the legal notices in the app.** Keep the About screen's copyright notice and its
   link to the source, with Meshtastic LLC still named (section 5d). Keep the
   Acknowledgements screen too — that list is the third-party licenses' own requirement,