bpcmitm_main: Remove unnecessary includes

Quite a few headers are unused in this header, so we can remove them to
make compilation a tiny bit faster.

stratosphere/ams_mitm/source/bpc_mitm/bpcmitm_main.hpp

@@ -16,14 +16,7 @@
 
 #pragma once
 
-#include <cstdlib>
-#include <cstdint>
-#include <cstring>
-#include <malloc.h>
-
 #include <switch.h>
-#include <atmosphere.h>
-#include <stratosphere.hpp>
 
 constexpr u32 BpcMitmPriority = 32;
 constexpr u32 BpcMitmStackSize = 0x8000;