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, 27 deletions

diff --git a/libs/usvfs/src/usvfs_dll/semaphore.h b/libs/usvfs/src/usvfs_dll/semaphore.h
deleted file mode 100644
index 1048c47..0000000
--- a/libs/usvfs/src/usvfs_dll/semaphore.h
+++ /dev/null
@@ -1,27 +0,0 @@
-#pragma once
-
-// based on code by Jeff Preshing
-
-// this is a synchronization class that prefers
-// undefined behaviour over deadlock. It's utterly broken
-// and needs to be replaced in time.
-
-class RecursiveBenaphore
-{
-
-public:
-  RecursiveBenaphore();
-  ~RecursiveBenaphore();
-
-  // wait on the semaphore. after timeout this will check if the current owner
-  // thread is still alive and steal the semaphore if it isn't. Otherwise this
-  // will continue to wait.
-  void wait(DWORD timeout = INFINITE);
-  void signal();
-
-private:
-  LONG m_Counter;
-  DWORD m_OwnerId;
-  int m_Recursion;
-  HANDLE m_Semaphore;
-};