[chore] Google (HTML) engine: remove obsolete GSA User-Agents (#6366)

The GSA headers that were introduced in PR #5644 unfortunately no longer
work (#6359).

The Google engines

- google.py
- google_videos.py

do not work anymore either, but we'll leave it in the code for now:

- In google.py, central functions like get_google_info(..) are provided, which
  are also used by other modules.
- We will probably need a Google HTML (and video) engine again very soon.

Related:

- https://github.com/searxng/searxng/issues/6359
- https://github.com/searxng/searxng/pull/6364

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

.github/workflows/data-update.yml

@@ -33,7 +33,6 @@ jobs:
           - update_engine_traits.py
           - update_wikidata_units.py
           - update_engine_descriptions.py
-          - update_gsa_useragents.py
 
     permissions:
       contents: write