Remove azeventhubs ApplicationInsights-Go requirement

[chlowell]

As in #23283, this module transitively requires a version of gopkg.in/yaml.v2 affected by a CVE:

github.com/Azure/azure-sdk-for-go/sdk/messaging/azeventhubs
└─ github.com/microsoft/[email protected]
   └─ github.com/onsi/[email protected]
      └─ gopkg.in/[email protected] <== need at least [email protected]