When we are trying to delete
the content type we are getting the below error.
Another site or list is
still using this content type. If you would still like to delete it, please
remove the content type from all sites and lists and then try again.
In my case I already deleted
the list, but still I am facing the same error message. The same list is available
in the recycle bin, follow the same steps as per the below.
Resolution:
Delete from site recycle
bin.
Delete from Site Collection
> Site Settings > Site Collection Administration > Recycle Bin.
Delete from End User Recycle
Bin Items.
Path:
_layouts/15/AdminRecycleBin.aspx
Delete from "Deleted
From End User Recycle Bin."
Path:
layouts/15/AdminRecycleBin.aspx?View=2
Now you can able to delete
the content type successfully.