botocore: remove amazon copyright from bedrock_utils (open-telemetry#3215)

These code has been written from scratch

Author: xrmx

instrumentation/opentelemetry-instrumentation-botocore/src/opentelemetry/instrumentation/botocore/extensions/bedrock_utils.py

@@ -12,10 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# Includes work from:
-# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
-# SPDX-License-Identifier: Apache-2.0
-
 from __future__ import annotations
 
 import json