[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>

searxng_extra/update/update_gsa_useragents.py

@@ -1,46 +0,0 @@
-#!/usr/bin/env python
-# SPDX-License-Identifier: AGPL-3.0-or-later
-"""This script fetches user agents suitable for Google.
-
-Output file: :origin:`searx/data/gsa_useragents.txt` (:origin:`CI Update data
-...  <.github/workflows/data-update.yml>`).
-
-.. Source for user agents: https://github.com/intoli/user-agents/
-
-"""
-
-from gzip import decompress
-from json import loads
-
-from searx.data import data_dir
-from searx.network import get as http_get
-from searx.utils import searxng_useragent
-
-DATA_FILE = data_dir / "gsa_useragents.txt"
-URL = "https://raw.githubusercontent.com/intoli/user-agents/main/src/user-agents.json.gz"
-
-
-def fetch_gsa_useragents() -> list[str]:
-    response = http_get(URL, timeout=3.0, headers={"User-Agent": searxng_useragent()})
-    response.raise_for_status()
-
-    suas: set[str] = set()
-    for ua in loads(decompress(response.content)):
-        if (
-            "Android" in ua["userAgent"]
-            and "Chrome" in ua["userAgent"]
-            and "Samsung" not in ua["userAgent"]
-            and "Android 10; K" not in ua["userAgent"]
-        ):
-            suas.add(ua["userAgent"])
-
-    luas = list(suas)
-    luas.sort()
-
-    return luas
-
-
-if __name__ == "__main__":
-    useragents = fetch_gsa_useragents()
-    with DATA_FILE.open("w", encoding="utf-8") as f:
-        f.write("\n".join(useragents))