remove un-necessary #pragma pack(1) and clean up doxgen format.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6437 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Include/IndustryStandard/Mbr.h

@@ -27,10 +27,9 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 #define MBR_SIZE                    512
 
-#pragma pack(1)
-//
-// MBR Partition Entry
-//
+///
+/// MBR Partition Entry
+///
 typedef struct {
   UINT8 BootIndicator;
   UINT8 StartHead;
@@ -55,6 +54,4 @@ typedef struct {
   UINT16                Signature;
 } MASTER_BOOT_RECORD;
 
-#pragma pack()
-
 #endif