vim-patch:8.2.3745: autochdir test fails without the +channel feature

Problem:    Autochdir test fails without the +channel feature.
Solution:   Remove the ch_logfile() call. (Dominique Pellé, closes vim/vim#9281)
f661cee847

src/nvim/testdir/test_autochdir.vim

@@ -28,7 +28,6 @@ endfunc
 
 func Test_set_filename_other_window()
   CheckFunction test_autochdir
-  call ch_logfile('logfile', 'w')
   let cwd = getcwd()
   call test_autochdir()
   call mkdir('Xa')