[TenantLevelAPIsNotAllowed] Remove rule, since check has moved to the ARM Manifest PR phase

[mikeharder]

From @rkmanda:

The evaluation of whether tenant level APIs should be allowed or not has moved to the ARM Manifest PR phase where the relevant finer grained conditions are used to flag a PR for a securityRBAC review. So this particular linter rule can now be removed.

https://teams.microsoft.com/l/message/19:78cd6c72c41240dc84a36523af60b88a@thread.tacv2/1754611942977?tenantId=72f988bf-86f1-41af-91ab-2d7cd011db47&groupId=0cab4ce9-7691-42ae-82e3-460d4346a710&parentMessageId=1754611942977&teamName=ARM%20API%20Reviewers&channelName=ARM%20swagger%20reviews&createdTime=1754611942977