[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>

searx/utils.py

@@ -26,7 +26,7 @@ from lxml.etree import XPath, XPathError, XPathSyntaxError
 from lxml.etree import ElementBase, _Element  # pyright: ignore[reportPrivateUsage]
 
 from searx import settings
-from searx.data import USER_AGENTS, gsa_useragents_loader
+from searx.data import USER_AGENTS
 from searx.version import VERSION_TAG
 from searx.exceptions import SearxXPathSyntaxException, SearxEngineXPathException
 from searx import logger
@@ -82,14 +82,6 @@ def gen_useragent(os_string: str | None = None) -> str:
     )
 
 
-def gen_gsa_useragent() -> str:
-    """Return a random "Google Go App" User Agent suitable for Google
-
-    See searx/data/gsa_useragents.txt
-    """
-    return choice(gsa_useragents_loader()) + " NSTNWV"
-
-
 class HTMLTextExtractor(HTMLParser):
     """Internal class to extract text from HTML"""