Remove elastictranscoder customization (#6645)

Elastic Transcoder removed from the SDK in
6546da0.

Author: dagnir

codegen/src/main/java/software/amazon/awssdk/codegen/internal/DocumentationUtils.java

@@ -50,7 +50,7 @@ public final class DocumentationUtils {
     //TODO probably should move this to a custom config in each service
     private static final Set<String> SERVICES_EXCLUDED_FROM_CROSS_LINKING = new HashSet<>(Arrays.asList(
             "apigateway", "budgets", "cloudsearch", "cloudsearchdomain",
-            "discovery", "elastictranscoder", "es", "glacier",
+            "discovery", "es", "glacier",
             "iot", "data.iot", "machinelearning", "rekognition", "s3", "sdb", "swf"
                                                                                                        ));
     private static final Pattern COMMENT_DELIMITER = Pattern.compile("\\*\\/");