Health Bot Service - Remove deprecated sku from swagger

[ShakedAharonn]

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[github-actions]

API Change Check

APIView identified API level changes in this PR and created the following API reviews

Language	API Review for Package
TypeSpec	Microsoft.HealthBot
Go	sdk/resourcemanager/healthbot/armhealthbot
Python	azure-mgmt-healthbot
JavaScript	@azure/arm-healthbot
Java	com.azure.resourcemanager:azure-resourcemanager-healthbot
Swagger	Microsoft.HealthBot