Pull request target updates (#139)

* Remove unused github workflows

* Update CODEOWNERS

.github/CODEOWNERS

@@ -1,5 +1,16 @@
-# Code owners file.
-# This file controls who is tagged for review for any given pull request.
+# Copyright 2024 Google LLC
+#
+# 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
+#
+#      https://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.
 
-# For anything not explicitly taken by someone else:
-* @open-telemetry/demo-approvers
+# Global owners
+* @GoogleCloudPlatform/opentelemetry-ops