vendor: Remove accidental go.work from azidentity

[shubhadapaithankar]

The go.work and go.work.sum files were accidentally included when vendoring the Azure SDK azidentity package. These files cause build failures with "directory cmd/aro is contained in a module that is not one of the workspace modules listed in go.work" error.

Removing these files fixes the build.

[openshift-ci]

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[cadenmarchese]

We wouldn't want to manually remove files from vendor, instead we'd want to facilitate the removal with go mod commands (probably go mod tidy). If the files are still getting brought in, we'd want to understand the dependency issue that is causing them to be vendored.