Remove vendored usvfs and Windows-only usvfs code paths

The Linux port uses its own in-process FUSE VFS (FuseConnector), so
usvfs was dead weight: libs/usvfs/ was never built, usvfsconnector.cpp
was explicitly REMOVE_ITEM'd from the source list, and every call site
was already guarded by #ifdef _WIN32 with a working Linux branch (the
Windows build is also broken on this branch, since FUSE3 is a hard
find_package dependency).

- Drop libs/usvfs/ and src/src/usvfsconnector.{cpp,h}
- Collapse #ifdef _WIN32 / usvfs include branches in organizercore,
  mainwindow, settings, util, spawn
- Remove getUsvfsVersionString() and the "usvfs: ..." log field
- Remove vfs32/64DLLName APPPARAMs (nothing reads them)
- Relabel About dialog "usvfs:" row to "VFS: FUSE 3"

1 files changed, 0 insertions, 87 deletions

diff --git a/libs/usvfs/src/shared/pch.h b/libs/usvfs/src/shared/pch.h
deleted file mode 100644
index e787f68..0000000
--- a/libs/usvfs/src/shared/pch.h
+++ /dev/null
@@ -1,87 +0,0 @@
-#pragma once
-
-#include <algorithm>
-#include <atomic>
-#include <bitset>
-#include <cassert>
-#include <codecvt>
-#include <cstddef>
-#include <cstdint>
-#include <cstring>
-#include <ctime>
-#include <exception>
-#include <format>
-#include <functional>
-#include <future>
-#include <iomanip>
-#include <ios>
-#include <limits>
-#include <map>
-#include <memory>
-#include <mutex>
-#include <regex>
-#include <shared_mutex>
-#include <sstream>
-#include <stdexcept>
-#include <string>
-#include <thread>
-#include <type_traits>
-#include <utility>
-#include <vector>
-
-#ifndef NOMINMAX
-#define NOMINMAX
-#endif
-
-// clang-format off
-#define WIN32_LEAN_AND_MEAN
-#include <Windows.h>
-#include <ShlObj.h>
-#include <comutil.h>
-#include <Psapi.h>
-#include <shellapi.h>
-#include <shlwapi.h>
-#include <fileapi.h>
-#include <DbgHelp.h>
-// clang-format on
-
-#define BOOST_INTERPROCESS_SEGMENT_MANAGER_ABI 1
-#include <boost/algorithm/string.hpp>
-#include <boost/algorithm/string/case_conv.hpp>
-#include <boost/any.hpp>
-#include <boost/container/flat_set.hpp>
-#include <boost/container/map.hpp>
-#include <boost/container/scoped_allocator.hpp>
-#include <boost/container/slist.hpp>
-#include <boost/container/string.hpp>
-#include <boost/container/vector.hpp>
-#include <boost/current_function.hpp>
-#include <boost/dll/runtime_symbol_info.hpp>
-#include <boost/filesystem.hpp>
-#include <boost/filesystem/detail/utf8_codecvt_facet.hpp>
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
-#include <boost/format.hpp>
-#include <boost/interprocess/ipc/message_queue.hpp>
-#include <boost/interprocess/managed_windows_shared_memory.hpp>
-#include <boost/interprocess/offset_ptr.hpp>
-#include <boost/interprocess/smart_ptr/deleter.hpp>
-#include <boost/interprocess/smart_ptr/shared_ptr.hpp>
-#include <boost/interprocess/smart_ptr/weak_ptr.hpp>
-#include <boost/interprocess/sync/named_mutex.hpp>
-#include <boost/lexical_cast.hpp>
-#include <boost/locale.hpp>
-#include <boost/multi_index/member.hpp>
-#include <boost/multi_index/ordered_index.hpp>
-#include <boost/multi_index_container.hpp>
-#include <boost/predef.h>
-#include <boost/static_assert.hpp>
-#include <boost/thread.hpp>
-#include <boost/thread/shared_lock_guard.hpp>
-#include <boost/thread/shared_mutex.hpp>
-#include <boost/tokenizer.hpp>
-#include <boost/type_traits.hpp>
-
-#include <spdlog/spdlog.h>
-
-namespace fs = boost::filesystem;