Removed _debugBreak() again, as there is already MIJIN_TRAP().

source/mijin/util/os.hpp

@@ -44,16 +44,4 @@ void setCurrentThreadName(const char* threadName) noexcept;
 
 } // namespace mijin
 
-#if MIJIN_TARGET_OS == MIJIN_OS_LINUX || MIJIN_TARGET_OS == MIJIN_OS_OSX
-#if !defined(SIGTRAP)
-static constexpr int SIGTRAP = 5;
-#endif
-#define _debugBreak() (void) std::raise(SIGTRAP)
-#elif MIJIN_TARGET_OS == MIJIN_OS_WINDOWS
-extern "C" __declspec(dllimport) void __stdcall DebugBreak();
-#define _debugBreak() DebugBreak()
-#else
-#define _debugBreak() ((void)0)
-#endif
-
 #endif // !defined(MIJIN_UTIL_OS_HPP_INCLUDED)