sharepoint online – Unable to remove unwanted App Permissions

Inside our online sharepoint tenant, i want to remove unwanted App Permission which were created during the development of some SharePoint add-ins, so i went to Admin center >> Apps >> App Permission:-

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then i search for some apps using the app identifier >> click on delete, as follow:-

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but after confirming the delete , i can still see/search the app permission identifier.. any advice how i can permanently delete unwanted App Permissions?