Fix precommit

Author: DylanRussell

exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/exporter.py

@@ -369,4 +369,4 @@ def _exporting(self) -> str:
         Returns a string that describes the overall exporter, to be used in
         warning messages.
         """
-        pass
+        pass