Fix javadoc generation for the remoterendering sdk (#44411)

Removed the whole code snippet as for some reason that is the only thing the javadoc pipeline accepted. Azure Remote Rendering is sunset anyway, so putting more work into trying to figure that out seems like a waste of time.

sdk/remoterendering/azure-mixedreality-remoterendering/README.md

@@ -278,15 +278,6 @@ You can get information about your conversions using the `listConversions` metho
 This method may return conversions which have yet to start, conversions which are running and conversions which have finished.
 In this example, we just list the output URLs of successful conversions started in the last day.
 
-```java readme-sample-listConversions
-for (AssetConversion conversion : client.listConversions()) {
-    if ((conversion.getStatus() == AssetConversionStatus.SUCCEEDED)
-        && (conversion.getCreationTime().isAfter(OffsetDateTime.now().minusDays(1)))) {
-        logger.info("Output Asset URL: {}", conversion.getOutputAssetUrl());
-    }
-}
-```
-
 ### Create a rendering session
 
 We assume that a RemoteRenderingClient has been constructed as described in the [Authenticate the Client](#authenticate-the-client) section.