fixed test

Author: liustve

aws-opentelemetry-distro/tests/amazon/opentelemetry/distro/test_otlp_aws_span_exporter.py

@@ -119,10 +119,6 @@ def test_sigv4_exporter_export_does_not_add_sigv4_if_not_valid_cw_endpoint(self,
         # SigV4 mock authentication injection
         mock_sigv4_auth.side_effect = self.mock_add_auth
 
-        # Initialize and call exporter
-        exporter = OTLPAwsSpanExporter(endpoint=OTLP_XRAY_ENDPOINT)
-        exporter.export(self.testing_spans)
-
         # For each invalid CW OTLP endpoint, validate that SigV4 is not injected
         self.invalid_otlp_tracing_endpoints.append("https://xray.bad-region-1.amazonaws.com/v1/traces")
         for bad_endpoint in self.invalid_otlp_tracing_endpoints: