IREmitter: Remove unused <array> header

Just one less include to worry about

FEXCore/Source/Interface/IR/IREmitter.cpp

@@ -12,9 +12,8 @@ $end_info$
 #include <FEXCore/Utils/EnumUtils.h>
 #include <FEXCore/Utils/LogManager.h>
 
-#include <array>
-#include <stdint.h>
-#include <string.h>
+#include <cstdint>
+#include <cstring>
 
 namespace FEXCore::IR {