chore: remove unused import

Tom McCarthy · Tom McCarthy · commit 3fbfe6c07a8d · 2020-06-05T23:18:18.000+02:00
diff --git a/aws_lambda_powertools/metrics/metrics.py b/aws_lambda_powertools/metrics/metrics.py
@@ -1,7 +1,6 @@
 import functools
 import json
 import logging
-import os
 from typing import Any, Callable
 
 from aws_lambda_powertools.metrics.base import MetricManager
