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, 20 deletions

diff --git a/libs/usvfs/.pre-commit-config.yaml b/libs/usvfs/.pre-commit-config.yaml
deleted file mode 100644
index 3103a1f..0000000
--- a/libs/usvfs/.pre-commit-config.yaml
+++ /dev/null
@@ -1,20 +0,0 @@
-repos:
-  - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v5.0.0
-    hooks:
-      - id: trailing-whitespace
-      - id: end-of-file-fixer
-      - id: check-merge-conflict
-      - id: check-case-conflict
-  - repo: https://github.com/pre-commit/mirrors-clang-format
-    rev: v19.1.5
-    hooks:
-    - id: clang-format
-      'types_or': [c++, c]
-
-ci:
-  autofix_commit_msg: "[pre-commit.ci] Auto fixes from pre-commit.com hooks."
-  autofix_prs: true
-  autoupdate_commit_msg: "[pre-commit.ci] Pre-commit autoupdate."
-  autoupdate_schedule: quarterly
-  submodules: false