fix CHANGELOG.md and remove unused variable in tests

Author: herin049

CHANGELOG.md

@@ -19,6 +19,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#4203](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4203))
 - `opentelemetry-instrumentation-psycopg2`: Add parameter `capture_parameters` to instrumentor.
   ([#4212](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4212))
+- `opentelemetry-instrumentation-botocore`: Add support for instrumenting `aiobotocore`
+  ([#4049](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4049))
 
 ### Fixed
 
@@ -239,8 +241,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#3681](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3681))
 - `opentelemetry-instrumentation-flask`: Fix exemplars generation for `http.server.request.duration` and `http.server.duration` metrics
   ([#3912](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3912))
-- `opentelemetry-instrumentation-botocore`: Add support for instrumenting `aiobotocore` 
-  ([#4049](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4049))
 
 ### Added
 

instrumentation/opentelemetry-instrumentation-botocore/tests/test_botocore_instrumentation.py

@@ -11,7 +11,6 @@
 # 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.
-import importlib.util
 import json
 import os
 from importlib.metadata import EntryPoint
@@ -54,8 +53,6 @@
 
 _REQUEST_ID_REGEX_MATCH = r"[A-Za-z0-9]{52}"
 
-aiobotocore_installed = importlib.util.find_spec("aiobotocore") is not None
-
 
 # pylint:disable=too-many-public-methods
 class TestBotocoreInstrumentor(TestBase):