[enh] py: drop deps (#5407)

The difference between decompression with brotli or gzip in HTML files is
negligible for 3 MB of compiled binary package.

Introduced in eaa694fb7d

Closes https://github.com/searxng/searxng/security/code-scanning/276
Closes https://github.com/searxng/searxng/security/dependabot/37

searx/engines/bing.py

@@ -201,7 +201,6 @@ def fetch_traits(engine_traits: EngineTraits):
         "User-Agent": gen_useragent(),
         "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
         "Accept-Language": "en-US;q=0.5,en;q=0.3",
-        "Accept-Encoding": "gzip, deflate, br",
         "DNT": "1",
         "Connection": "keep-alive",
         "Upgrade-Insecure-Requests": "1",

searx/engines/brave.py

@@ -198,9 +198,6 @@ time_range_map: dict[str, str] = {
 
 def request(query: str, params: dict[str, t.Any]) -> None:
 
-    # Don't accept br encoding / see https://github.com/searxng/searxng/pull/1787
-    params['headers']['Accept-Encoding'] = 'gzip, deflate'
-
     args: dict[str, t.Any] = {
         'q': query,
         'source': 'web',
@@ -436,14 +433,11 @@ def fetch_traits(engine_traits: EngineTraits):
 
     engine_traits.custom["ui_lang"] = {}
 
-    headers = {
-        'Accept-Encoding': 'gzip, deflate',
-    }
     lang_map = {'no': 'nb'}  # norway
 
     # languages (UI)
 
-    resp = get('https://search.brave.com/settings', headers=headers)
+    resp = get('https://search.brave.com/settings')
 
     if not resp.ok:  # type: ignore
         print("ERROR: response from Brave is not OK.")
@@ -472,7 +466,7 @@ def fetch_traits(engine_traits: EngineTraits):
 
     # search regions of brave
 
-    resp = get('https://cdn.search.brave.com/serp/v2/_app/immutable/chunks/parameters.734c106a.js', headers=headers)
+    resp = get('https://cdn.search.brave.com/serp/v2/_app/immutable/chunks/parameters.734c106a.js')
 
     if not resp.ok:  # type: ignore
         print("ERROR: response from Brave is not OK.")

searx/engines/tineye.py

@@ -73,7 +73,6 @@ def request(query, params):
     params['headers'].update(
         {
             'Connection': 'keep-alive',
-            'Accept-Encoding': 'gzip, defalte, br',
             'Host': 'tineye.com',
             'DNT': '1',
             'TE': 'trailers',