Revert "[PECO-1083] Updated thrift files and added check for protocol version" (#237)

Reverts #229 as it causes all of our e2e tests to fail on some versions of DBR.

We'll reimplement the protocol version check in a follow-up.

This reverts commit 241e934.

Author: Jesse

src/databricks/sql/client.py

@@ -5,7 +5,6 @@
 import requests
 import json
 import os
-from databricks.sql.thrift_api.TCLIService import ttypes
 
 from databricks.sql import __version__
 from databricks.sql import *
@@ -226,11 +225,6 @@ def __del__(self):
     def get_session_id(self):
         return self.thrift_backend.handle_to_id(self._session_handle)
 
-    def get_session_protocol_version(self):
-        return self.thrift_backend.extract_protocol_version_from_handle(
-            self._session_handle
-        )
-
     def get_session_id_hex(self):
         return self.thrift_backend.handle_to_hex_id(self._session_handle)
 
@@ -507,13 +501,6 @@ def execute(
         """
         if parameters is None:
             parameters = []
-        elif (
-            self.connection.get_session_protocol_version()
-            < ttypes.TProtocolVersion.SPARK_CLI_SERVICE_PROTOCOL_V8
-        ):
-            raise Error(
-                "Parameterized operations are not supported by this server. DBR 14.1 is required."
-            )
         else:
             parameters = named_parameters_to_tsparkparams(parameters)