Remove stream options as the feature is not ready yet

[yuanzhuangyuanzhuang]

Remove the stream_options from 2024-07-01-preivew API as this feature is not ready to use.

[openapi-pipeline-app]

Next Steps to Merge

Next steps that must be taken to merge this PR:

• ❌ This is the public specs repo main branch which is not intended for iterative development.
  You must acknowledge that you understand that after this PR is merged, you won't be able to stop your changes from being published to Azure customers.
  If this is what you intend, add PublishToCustomers label to your PR.
  Otherwise, retarget this PR onto a feature branch, i.e. with prefix release- (see aka.ms/azsdk/api-versions#release--branches).
• ❌ The required check named Swagger SemanticValidation has failed. Refer to the check in the PR's 'Checks' tab for details on how to fix it and consult the aka.ms/ci-fix guide

[openapi-pipeline-app]

Generated ApiView

Language	Package Name	ApiView Link
Swagger	AzureOpenAI	https://apiview.dev/Assemblies/Review/6693675ace534d4aa3159f202a195962?revisionId=c4507e1db2694764ba9d4538094660fa