Update opentracing-shim/src/test/java/io/opentelemetry/opentracingshim/TracerShimTest.java

Co-authored-by: jason plumb <[email protected]>

Author: jkwatson

opentracing-shim/src/test/java/io/opentelemetry/opentracingshim/TracerShimTest.java

@@ -357,12 +357,6 @@ void extract_onlyBaggage() {
     assertThat(spanContextShim.getBaggage()).isEqualTo(baggage);
   }
 
-  @Test
-  void extract_null_spanctx() {
-    SpanContext spanContext = tracerShim.extract(Format.Builtin.TEXT_MAP, null);
-    assertThat(spanContext).isNull();
-  }
-
   @Test
   void close_OpenTelemetrySdk() {
     SdkTracerProvider sdkProvider = mock(SdkTracerProvider.class);