remove compatibility file from issue templates

Author: nikolaredstork

.github/ISSUE_TEMPLATE/gp-01.yml

@@ -108,7 +108,6 @@ body:
 
         ### Step 9 — Documentation & Changelog
         - [ ] `CHANGELOG.md` entry added
-        - [ ] `COMPATIBILITY.md` updated with new GEMS Language version mapping
         - [ ] `AGENTS.md` reviewed for impact and updated if needed
 
         ### Step 10 — Release

.github/PULL_REQUEST_TEMPLATE.md

@@ -21,5 +21,4 @@
 - [ ] Formatting passes (`black`, `isort`)
 - [ ] `pyproject.toml` version bumped if applicable
 - [ ] `CHANGELOG.md` entry added
-- [ ] `COMPATIBILITY.md` updated if GEMS Language version support changed
 - [ ] `AGENTS.md` reviewed for impact and updated if needed