dm: remove GUEST_CFG_OFFSET

Per commit dbd9ab0, GUEST_CFG_OFFSET is
no longer needed.

Tracked-On: #2792
Signed-off-by: Peter Fang <peter.fang@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>
Acked-by: Yin Fengwei <fengwei.yin@intel.com>

Author: peterfang

devicemodel/include/public/acrn_common.h

@@ -448,18 +448,6 @@ struct acrn_vm_pci_msix_remap {
 	uint32_t vector_ctl;
 } __aligned(8);
 
-/**
- * @brief The guest config pointer offset.
- *
- * It's designed to support passing DM config data pointer, based on it,
- * hypervisor would parse then pass DM defined configuration to GUEST VCPU
- * when booting guest VM.
- * the address 0xef000 here is designed by DM, as it arranged all memory
- * layout below 1M, DM add this address to E280 reserved range to make sure
- * there is no overlap for the address 0xef000 usage.
- */
-#define GUEST_CFG_OFFSET	0xef000UL
-
 /**
  * @brief Info The power state data of a VCPU.
  *