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, 23 deletions

diff --git a/libs/usvfs/src/shared/CMakeLists.txt b/libs/usvfs/src/shared/CMakeLists.txt
deleted file mode 100644
index b1a7c05..0000000
--- a/libs/usvfs/src/shared/CMakeLists.txt
+++ /dev/null
@@ -1,23 +0,0 @@
-cmake_minimum_required(VERSION 3.16)
-
-find_package(Boost CONFIG REQUIRED COMPONENTS algorithm interprocess filesystem)
-find_package(spdlog CONFIG REQUIRED)
-
-file(GLOB sources "*.cpp" "*.h")
-source_group("" FILES ${sources})
-
-add_library(shared STATIC ${sources})
-target_link_libraries(shared
-    PUBLIC
-    Boost::algorithm Boost::interprocess comsuppw
-    Boost::filesystem spdlog::spdlog_header_only)
-target_include_directories(shared
-    PUBLIC ${PROJECT_SOURCE_DIR}/include/usvfs ${CMAKE_CURRENT_SOURCE_DIR})
-target_precompile_headers(shared PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/pch.h)
-target_compile_options(shared PUBLIC /FI"pch.h")
-target_compile_definitions(shared PUBLIC
-    SPDLOG_USE_STD_FORMAT SPDLOG_NO_NAME SPDLOG_NO_REGISTRY_MUTEX
-    BOOST_INTERPROCESS_SHARED_DIR_FUNC BOOST_CONFIG_SUPPRESS_OUTDATED_MESSAGE
-    NOMINMAX _WINDOWS _UNICODE UNICODE
-    _DISABLE_CONSTEXPR_MUTEX_CONSTRUCTOR
-)