Revert "Fix regression from https://gitlab.com/OpenMW/openmw/-/merge_requests/1776"

This reverts commit 6a5ad4ca43.

components/files/openfile.cpp

@@ -3,20 +3,11 @@
 #include <cstring>
 #include <fstream>
 
-#if defined(_WIN32) || defined(__WINDOWS__)
-#include <boost/locale.hpp>
-#endif
-
 namespace Files
 {
     std::unique_ptr<std::ifstream> openBinaryInputFileStream(const std::filesystem::path &path)
     {
-#if defined(_WIN32) || defined(__WINDOWS__)
-        std::wstring wpath = boost::locale::conv::utf_to_utf<wchar_t>(path);
-        auto stream = std::make_unique<std::ifstream>(wpath, std::ios::binary);
-#else
         auto stream = std::make_unique<std::ifstream>(path, std::ios::binary);
-#endif
         if (!stream->is_open())
             throw std::runtime_error("Failed to open '" + path.string() + "' for reading: " + std::strerror(errno)); //TODO(Project579): This will probably break in windows with unicode paths
         stream->exceptions(std::ios::badbit);