Yes, I meant that folder. Anything that is in the embedded folder is part of the Project File. So the library folder is not loaded from a location on your hard drive or from the BIM Server. Instead it is in the project file. So if you delete it from here, it will be gone from the file. This is why you need a backup just in case.
The name of the folder says "parts", not "macros". "Macro" is a word used in GDL to refer to GDL library parts that are parts of other Library parts and they are "called" from their "mother" library part. Many library parts may use the same macro.
Select the folder in the Embedded Library. Then use the Export embeded subtree in local folder button below the libraries list to save it on your hard drive.
Then with the folder still selected, use the Delete button to delete it, then OK the Dialog.
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