cxl/cper: Remove duplicated GUID defines

cxl/cper: Remove duplicated GUID defines

Commit 54ce1927eb78 ("cxl/cper: Fix errant CPER prints for CXL events")
moved the CXL CPER section defines to include/linux/cper.h from ghes.c

When the latest cxl/cper series was reworked those defines were kept in
ghes.c by accident.  Thus they were duplicated.

Delete the duplicate defines keeping them in the header to be shared
between efi and apei.

Suggested-by: Fabio M. De Francesco <fabio.maria.de.francesco@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20240502-cper-fix-dup-guid-v1-1-283cc447c7bf@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>