[arrow] Remove unnecessary (and outdated) comment and default sanitizers.

projects/arrow/project.yaml

@@ -1,24 +1,5 @@
-# Copyright 2018 Google Inc.
-#
-# 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.
-#
-################################################################################
-
 homepage: "https://arrow.apache.org/"
 primary_contact: "antoine@python.org"
 auto_ccs:
   - "wesmckinn@gmail.com"
   - "private@arrow.apache.org"
-sanitizers:
-  - address
-  - undefined