The platform has already been renamed to `qtci-macos-11-x86_64`, and
this is most likely a leftover.
Change-Id: I431a4c05104788d9b4221de8bafcf122a97eee14
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>