rolled in review comments

Author: scmacdon

javav2/example_code/entityresolution/src/main/java/com/example/entity/HelloEntityResoultion.java

@@ -57,7 +57,6 @@ public static EntityResolutionAsyncClient getResolutionAsyncClient() {
                 .build();
 
             entityResolutionAsyncClient = EntityResolutionAsyncClient.builder()
-                .region(Region.US_EAST_1)
                 .httpClient(httpClient)
                 .overrideConfiguration(overrideConfig)
                 .build();