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, 35 deletions

diff --git a/libs/usvfs/test/usvfs_test_runner/CMakeLists.txt b/libs/usvfs/test/usvfs_test_runner/CMakeLists.txt
deleted file mode 100644
index a0a7ca9..0000000
--- a/libs/usvfs/test/usvfs_test_runner/CMakeLists.txt
+++ /dev/null
@@ -1,35 +0,0 @@
-cmake_minimum_required(VERSION 3.16)
-
-find_package(GTest CONFIG REQUIRED)
-
-# other executables
-add_executable(test_file_operations
-    test_file_operations/test_file_operations.cpp
-    test_file_operations/test_filesystem.cpp
-    test_file_operations/test_filesystem.h
-    test_file_operations/test_ntapi.cpp
-    test_file_operations/test_ntapi.h
-    test_file_operations/test_ntdll_declarations.h
-    test_file_operations/test_w32api.cpp
-    test_file_operations/test_w32api.h
-)
-usvfs_set_test_properties(test_file_operations FOLDER usvfs_test_runner)
-target_link_libraries(test_file_operations PRIVATE test_utils ntdll)
-
-add_executable(usvfs_test
-    usvfs_test/usvfs_basic_test.cpp
-    usvfs_test/usvfs_basic_test.h
-    usvfs_test/usvfs_test_base.cpp
-    usvfs_test/usvfs_test_base.h
-    usvfs_test/usvfs_test.cpp
-)
-usvfs_set_test_properties(usvfs_test FOLDER usvfs_test_runner)
-usvfs_target_link_usvfs(usvfs_test)
-target_link_libraries(usvfs_test PRIVATE test_utils)
-
-# actual test executable
-add_executable(usvfs_test_runner usvfs_test_runner.cpp)
-usvfs_set_test_properties(usvfs_test_runner FOLDER usvfs_test_runner)
-target_link_libraries(usvfs_test_runner
-    PRIVATE test_utils GTest::gtest GTest::gtest_main)
-add_dependencies(usvfs_test_runner usvfs_test test_file_operations)