remove unnecessery include

Author: sivan-shani

lld/ELF/Arch/AArch64.cpp

@@ -13,7 +13,6 @@
 #include "Target.h"
 #include "lld/Common/ErrorHandler.h"
 #include "llvm/BinaryFormat/ELF.h"
-#include "llvm/Support/AArch64BuildAttributes.h"
 #include "llvm/Support/Endian.h"
 
 using namespace llvm;