[IMP] Cleanup unnecessary imports

Co-authored-by: Nils Hamerlinck <nilshamerlinck@users.noreply.github.com>

report_py3o/models/py3o_report.py

@@ -7,6 +7,7 @@ import os
 import subprocess
 import sys
 import tempfile
+import warnings
 from base64 import b64decode
 from contextlib import closing
 from io import BytesIO