diff --git a/main_diffusion.py b/main_diffusion.py
index 13a9626..378f991 100644
--- a/main_diffusion.py
+++ b/main_diffusion.py
@@ -1,18 +1,3 @@
-# coding=utf-8
-# Copyright 2020 The Google Research Authors.
-#
-# Licensed 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.
-
 """Training and evaluation"""
 
 from absl import app