If the Enterprise Dashboard product configuration you have added the user to has storage associated with it (for example it may say Creative Cloud All Apps - 2 GB) then this cannot be turned off by the admin.
Some services can be turned off, but storage and CC libraries are core services which cannot be turned off.
The alternative is to add the user to a product configuration that has no storage, if you have one. Or make a request to Adobe to have Storage and Services turned off for your Enterprise Dashboard. Note that this will turn off all storage and services, and services such as Typekit, mobile apps etc will no longer function.
If the Enterprise Dashboard product configuration you have added the user to has storage associated with it (for example it may say Creative Cloud All Apps - 2 GB) then this cannot be turned off by the admin.
Some services can be turned off, but storage and CC libraries are core services which cannot be turned off.
The alternative is to add the user to a product configuration that has no storage, if you have one. Or make a request to Adobe to have Storage and Services turned off for your Enterprise Dashboard. Note that this will turn off all storage and services, and services such as Typekit, mobile apps etc will no longer function.