remove print statements

Author: DylanRussell

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

@@ -288,15 +288,13 @@ def _export(
             if self._shutdown_occuring.is_set():
                 return self._result.FAILURE
             try:
-                print("started exporting!")
                 self._export_not_occuring.clear()
                 self._client.Export(
                     request=self._translate_data(data),
                     metadata=self._headers,
                     timeout=self._timeout,
                 )
                 self._export_not_occuring.set()
-                print("finished exporting!")
 
                 return self._result.SUCCESS