revert: revert human input relevant code (#31766)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

api/libs/flask_utils.py

@@ -1,15 +1,12 @@
 import contextvars
 from collections.abc import Iterator
 from contextlib import contextmanager
-from typing import TYPE_CHECKING, TypeVar
+from typing import TypeVar
 
 from flask import Flask, g
 
 T = TypeVar("T")
 
-if TYPE_CHECKING:
-    from models import Account, EndUser
-
 
 @contextmanager
 def preserve_flask_contexts(
@@ -67,7 +64,3 @@ def preserve_flask_contexts(
         finally:
             # Any cleanup can be added here if needed
             pass
-
-
-def set_login_user(user: "Account | EndUser"):
-    g._login_user = user