efi_loader: duplicate IMAGE_SUBSYSTEM_EFI_APPLICATION

IMAGE_SUBSYSTEM_EFI_APPLICATION is already defined in
include/asm-generic/pe.h which is included in include/pe.h. We should
not define it twice.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/include/pe.h b/include/pe.h
index 36e1908..c7aeb2d 100644
--- a/include/pe.h
+++ b/include/pe.h
@@ -48,7 +48,6 @@
 
 #define IMAGE_NT_OPTIONAL_HDR32_MAGIC	0x10b
 #define IMAGE_NT_OPTIONAL_HDR64_MAGIC	0x20b
-#define IMAGE_SUBSYSTEM_EFI_APPLICATION	10
 
 typedef struct _IMAGE_FILE_HEADER {
 	uint16_t Machine;