diff --git a/airflow-core/src/airflow/utils/thread_safe_dict.py b/airflow-core/src/airflow/utils/thread_safe_dict.py
deleted file mode 100644
index ecd1aed202c62..0000000000000
--- a/airflow-core/src/airflow/utils/thread_safe_dict.py
+++ /dev/null
@@ -1,49 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-#
-#   http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-from __future__ import annotations
-
-import threading
-
-
-class ThreadSafeDict:
-    """Dictionary that uses a lock during operations, to ensure thread safety."""
-
-    def __init__(self):
-        self.sync_dict = {}
-        self.thread_lock = threading.Lock()
-
-    def set(self, key, value):
-        with self.thread_lock:
-            self.sync_dict[key] = value
-
-    def get(self, key):
-        with self.thread_lock:
-            return self.sync_dict.get(key)
-
-    def delete(self, key):
-        with self.thread_lock:
-            if key in self.sync_dict:
-                del self.sync_dict[key]
-
-    def clear(self):
-        with self.thread_lock:
-            self.sync_dict.clear()
-
-    def get_all(self):
-        with self.thread_lock:
-            # Return a copy to avoid exposing the internal dictionary.
-            return self.sync_dict.copy()
diff --git a/scripts/ci/prek/known_airflow_core_utils_modules.txt b/scripts/ci/prek/known_airflow_core_utils_modules.txt
index bdd3a2aa51fa5..fd7b7ebe2aaed 100644
--- a/scripts/ci/prek/known_airflow_core_utils_modules.txt
+++ b/scripts/ci/prek/known_airflow_core_utils_modules.txt
@@ -35,6 +35,5 @@ span_status
 sqlalchemy
 state
 strings
-thread_safe_dict
 types
 yaml