Remove unused 'redirect_handler' code

In be74586 the redirect_handler code
was removed but only partially.

This change removes the rest of the dead code related to
redirect_handler.

tests/unit/test_client.py

@@ -117,7 +117,6 @@ def test_request_headers(mock_get_and_post):
                 }
             ),
             http_scheme="http",
-            redirect_handler=None,
         )
 
     def assert_headers(headers):

trino/client.py

@@ -401,7 +401,6 @@ def __init__(
         http_session: Any = None,
         http_scheme: str = None,
         auth: Optional[Any] = constants.DEFAULT_AUTH,
-        redirect_handler: Any = None,
         max_attempts: int = MAX_ATTEMPTS,
         request_timeout: Union[float, Tuple[float, float]] = constants.DEFAULT_REQUEST_TIMEOUT,
         handle_retry=_RetryWithExponentialBackoff(),
@@ -434,7 +433,6 @@ def __init__(
             self._auth.set_http_session(self._http_session)
             self._exceptions += self._auth.get_exceptions()
 
-        self._redirect_handler = redirect_handler
         self._request_timeout = request_timeout
         self._handle_retry = handle_retry
         self.max_attempts = max_attempts
@@ -557,22 +555,8 @@ def post(self, sql: str, additional_http_headers: Optional[Dict[str, Any]] = Non
             data=data,
             headers=http_headers,
             timeout=self._request_timeout,
-            allow_redirects=self._redirect_handler is None,
             proxies=PROXIES,
         )
-        if self._redirect_handler is not None:
-            while http_response is not None and http_response.is_redirect:
-                location = http_response.headers["Location"]
-                url = self._redirect_handler.handle(location)
-                logger.info("redirect %s from %s to %s", http_response.status_code, location, url)
-                http_response = self._post(
-                    url,
-                    data=data,
-                    headers=http_headers,
-                    timeout=self._request_timeout,
-                    allow_redirects=False,
-                    proxies=PROXIES,
-                )
         return http_response
 
     def get(self, url: str):

trino/dbapi.py

@@ -147,7 +147,6 @@ def __init__(
         http_scheme=constants.HTTP,
         auth=constants.DEFAULT_AUTH,
         extra_credential=None,
-        redirect_handler=None,
         max_attempts=constants.DEFAULT_MAX_ATTEMPTS,
         request_timeout=constants.DEFAULT_REQUEST_TIMEOUT,
         isolation_level=IsolationLevel.AUTOCOMMIT,
@@ -192,7 +191,6 @@ def __init__(
         self.http_scheme = http_scheme if not parsed_host.scheme else parsed_host.scheme
         self.auth = auth
         self.extra_credential = extra_credential
-        self.redirect_handler = redirect_handler
         self.max_attempts = max_attempts
         self.request_timeout = request_timeout
         self.client_tags = client_tags
@@ -251,7 +249,6 @@ def _create_request(self):
             self._http_session,
             self.http_scheme,
             self.auth,
-            self.redirect_handler,
             self.max_attempts,
             self.request_timeout,
         )