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, 36 deletions

diff --git a/libs/usvfs/test/tinjectlib_test/testinject_dll/main.cpp b/libs/usvfs/test/tinjectlib_test/testinject_dll/main.cpp
deleted file mode 100644
index 8339e97..0000000
--- a/libs/usvfs/test/tinjectlib_test/testinject_dll/main.cpp
+++ /dev/null
@@ -1,36 +0,0 @@
-#include "main.h"
-
-void __cdecl InitNoQuit(LPVOID, size_t)
-{
-  // nop
-}
-
-void __cdecl InitNoParam(LPVOID, size_t)
-{
-  ExitProcess(10001);
-}
-
-void __cdecl InitComplexParam(LPVOID userData, size_t)
-{
-  LPCWSTR string = (LPCWSTR)userData;
-  if (wcscmp(string, L"magic_parameter") == 0) {
-    ExitProcess(10002);
-  } else {
-    ExitProcess(20003);
-  }
-}
-
-BOOL APIENTRY DllMain(HMODULE, DWORD reasonForCall, LPVOID)
-{
-  switch (reasonForCall) {
-  case DLL_PROCESS_ATTACH: {
-  } break;
-  case DLL_PROCESS_DETACH: {
-  } break;
-  case DLL_THREAD_ATTACH: {
-  } break;
-  case DLL_THREAD_DETACH: {
-  } break;
-  }
-  return TRUE;
-}