[AutoPR Azure.ResourceManager.Monitor] Remove the deprecated classic alerts from spec#9357

azure-sdk wants to merge 1 commit intomainazure-sdk/azure-sdk-for-net:mainfrom

sdkAuto/30787/Azure.ResourceManager.Monitorazure-sdk/azure-sdk-for-net:sdkAuto/30787/Azure.ResourceManager.MonitorCopy head branch name to clipboard