{Core} Drop msal_authentication import

Author: VoxSecundus

src/azure-cli-core/azure/cli/core/_profile.py

@@ -9,7 +9,6 @@
 from enum import Enum
 
 from azure.cli.core._session import ACCOUNT
-from azure.cli.core.auth.msal_authentication import _TENANT, _CLIENT_ID, _CLIENT_SECRET
 from azure.cli.core.azclierror import AuthenticationError
 from azure.cli.core.cloud import get_active_cloud, set_cloud_subscription
 from azure.cli.core.util import in_cloud_console, can_launch_browser, assert_guid, is_github_codespaces