Remove sourcegraph_code reference from NEWS.md

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: bschilder

NEWS.md

@@ -18,7 +18,6 @@
 ## New features
 
 * New function `github_dependents_scrape`.
-* New function `sourcegraph_code`.
 * Standardize `rworkflows.yml` with canonical template:
   enable Docker on `ghcr.io`, set `write-all` permissions,
   use `GITHUB_TOKEN`, add `devel`/`RELEASE_**` branch triggers.