revert change

Author: laurit

instrumentation-api-incubator/src/main/java/io/opentelemetry/instrumentation/api/incubator/semconv/rpc/RpcCommonAttributesExtractor.java

@@ -40,5 +40,7 @@ public final void onEnd(
       Context context,
       REQUEST request,
       @Nullable RESPONSE response,
-      @Nullable Throwable error) {}
+      @Nullable Throwable error) {
+    // No response attributes
+  }
 }