Do you mean you want to remove Skype meeting add-ins in outlook client?
If so, you can click Options->Add-Ins->Skype Meeting Add-in-> Remove to remove it. To be noticed that only single user can manually disable this outlook skype meeting Add-in option in their outlook in the organization. So, all your users’ needs to do manually disable this outlook skype meeting add-in option in their outlook account in the organization.
For more details about it, you can learn it from:
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