1 files changed, 0 insertions, 15 deletions
diff --git a/MdePkg/Include/Pi/PiDxeCis.h b/MdePkg/Include/Pi/PiDxeCis.h
index a2208dffc2..3292809851 100644
--- a/MdePkg/Include/Pi/PiDxeCis.h
+++ b/MdePkg/Include/Pi/PiDxeCis.h
@@ -737,19 +737,4 @@ typedef struct {
 
 typedef DXE_SERVICES EFI_DXE_SERVICES;
 
-
-/**
-  The function prototype for invoking a function on an Application Processor.
-
-  This definition is used by the UEFI MP Serices Protocol, and the
-  PI SMM System Table.
-
-  @param[in,out] Buffer  The pointer to private data buffer.
-**/
-typedef
-VOID
-(EFIAPI *EFI_AP_PROCEDURE)(
-  IN OUT VOID  *Buffer
-  );
-
 #endif