[Bug] Update client benchmark post type removal

[dreamer-89]

Coming from discussion in #2979.

Background

Post type removal in #1940, need to remove the same from client bulk indexing benchmark. type is taken as input from the CLI.
Code usage, defined here.

Today, running bulk indexing benchmark fails with 400 bad request

Command

gradlew -p client/benchmark run --args ' rest bulk localhost build/documents-2.json geonames type 8647880 5000'

Output

org.opensearch.OpenSearchException: org.opensearch.client.ResponseException: method [POST], host [http://localhost:9200], URI [/geonames/type/_noop_bulk], status line [HTTP/1.1 400 Bad Request]
{"error":"no handler found for uri [/geonames/type/_noop_bulk] and method [POST]"}
        at org.opensearch.client.benchmark.rest.RestClientBenchmark$RestBulkRequestExecutor.bulkIndex(RestClientBenchmark.java:100) ~[main/:?]
        at org.opensearch.client.benchmark.ops.bulk.BulkBenchmarkTask$BulkIndexer.run(BulkBenchmarkTask.java:191) [main/:?]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) [?:?]
        at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) [?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) [?:?]
        at java.lang.Thread.run(Thread.java:833) [?:?]
Caused by: org.opensearch.client.ResponseException: method [POST], host [http://localhost:9200], URI [/geonames/type/_noop_bulk], status line [HTTP/1.1 400 Bad Request]
{"error":"no handler found for uri [/geonames/type/_noop_bulk] and method [POST]"}
        at org.opensearch.client.RestClient.convertResponse(RestClient.java:350) ~[opensearch-rest-client-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
        at org.opensearch.client.RestClient.performRequest(RestClient.java:320) ~[opensearch-rest-client-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
        at org.opensearch.client.RestClient.performRequest(RestClient.java:295) ~[opensearch-rest-client-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
        at org.opensearch.client.benchmark.rest.RestClientBenchmark$RestBulkRequestExecutor.bulkIndex(RestClientBenchmark.java:97) ~[main/:?]
        ... 6 more
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