Revert 35 turbo change

Author: pamelafox

infra/main.bicep

@@ -59,6 +59,7 @@ param speechServiceName string = ''
 param speechServiceSkuName string // Set in main.parameters.json
 param useGPT4V bool = false
 
+// https://learn.microsoft.com/azure/ai-services/openai/concepts/models?tabs=python-secure%2Cstandard%2Cstandard-chat-completions#standard-deployment-model-availability
 @description('Location for the OpenAI resource group')
 @allowed([
   'canadaeast'