prefs.py: Always use tkinter.filedialog for Output File Location

* I can't even get this code to be problematic, with a folder containing
  unicode heart characters, on 64-bit Python 3.7.9 (Release/4.1.6 adjusted to
  not set UTF-8 locale), let alone on 64-bit Python 3.11 and this branch.

  So, just always use the tkinter dialog.  Bye-bye ctypes code which I just
  couldn't get to work under 64-bit Python.

* I *think* the issue with the ctypes code was that under 32-bit an 'int' and
  a pointer are the same size.

  'Raw' (not declaring types beforehand) the `SHBrowseForFolderW()` function
  causes ctypes to consider it returns an int.  This works on 32-bit.

  But on 64-bit that int is still 32-bits, but pointers are 64-bit, so ctypes
  ends up coercing/casting/truncating the returned pointer into an int,
  which than can't even be cast back to a pointer.

  Meanwhile, attempting to properly define the signature of the function
  has only lead to it crashing on invocation, despite being passed the same
  BROWSEINFOW structure, defined in the same manner.  This might be a matter
  of a type within it needing adjusting, but I was following the docs there.

prefs.py

@@ -1078,48 +1078,13 @@ class PreferencesDialog(tk.Toplevel):
         :param title: Title of the window
         :param pathvar: the path to start the dialog on
         """
-        import locale
-
-        # If encoding isn't UTF-8 we can't use the tkinter dialog
-        current_locale = locale.getlocale(locale.LC_CTYPE)
-        directory = None
-        if sys.platform == 'win32' and current_locale[1] not in ('utf8', 'UTF8', 'utf-8', 'UTF-8'):
-            def browsecallback(hwnd, uMsg, lParam, lpData):  # noqa: N803 # Windows API convention
-                # set initial folder
-                if uMsg == BFFM_INITIALIZED and lpData:
-                    ctypes.windll.user32.SendMessageW(hwnd, BFFM_SETSELECTION, 1, lpData)
-                return 0
-
-            browseInfo = BROWSEINFOW()  # noqa: N806 # Windows convention
-            # browseInfo.pidlRoot = None
-            browseInfo.pszDisplayName = ctypes.c_wchar_p("x" * MAX_PATH)
-            browseInfo.lpszTitle = title
-            browseInfo.ulFlags = BIF_RETURNONLYFSDIRS | BIF_USENEWUI
-            browseInfo.lpfn = BrowseCallbackProc(browsecallback)
-            # browseInfo.lParam = pathvar.get().startswith('~') and join(config.home_path,
-            #                                                            pathvar.get()[2:]) or pathvar.get()
-            ctypes.windll.ole32.CoInitialize(None)
-            pidl = ctypes.windll.shell32.SHBrowseForFolderW(ctypes.byref(browseInfo))
-            # ctypes.ArgumentError: argument 1: <class 'TypeError'>: expected LP__ITEMIDLIST instance instead of int
-            # pidl = SHBrowseForFolderW(ctypes.byref(browseInfo))
-            # OSError: exception: access violation writing 0x00007FFB582DC9BF
-            if pidl:
-                pidl = ctypes.cast(pidl, PIDLIST_ABSOLUTE)
-                path = ctypes.create_unicode_buffer(MAX_PATH)
-                path = SHGetPathFromIDListW(pidl)
-                ctypes.windll.ole32.CoTaskMemFree(pidl)
-                directory = path.value
-            else:
-                directory = None
-
-        else:
-            import tkinter.filedialog
-            directory = tkinter.filedialog.askdirectory(
-                parent=self,
-                initialdir=expanduser(pathvar.get()),
-                title=title,
-                mustexist=tk.TRUE
-            )
+        import tkinter.filedialog
+        directory = tkinter.filedialog.askdirectory(
+            parent=self,
+            initialdir=expanduser(pathvar.get()),
+            title=title,
+            mustexist=tk.TRUE
+        )
 
         if directory:
             pathvar.set(directory)