Update otel example collector configs to avoid deprecated es exporter config

[carsonip]

Describe the enhancement:

After upgrading to elasticsearchexporter version v0.122.0 when open-telemetry/opentelemetry-collector-contrib#38500 should be released, remove any logs_dynamic_index, metrics_dynamic_index, traces_dynamic_index usage to avoid deprecation warning logs.

Existing usages: https://github.com/search?q=repo%3Aelastic%2Felastic-agent%20dynamic_index&type=code

Describe a specific use case for the enhancement or feature:

to avoid OTel collector deprecation warning when using example configs

What is the definition of done?

• All *_dynamic_index config removed.
• No deprecation warning logs