Remove auto_restore_winfixwidth feature

Author: lambdalisue

autoload/fern.vim

@@ -31,7 +31,6 @@ call s:Config.config(expand('<sfile>:p'), {
       \ 'disable_drawer_hover_popup': 0,
       \ 'disable_drawer_tabpage_isolation': 0,
       \ 'disable_drawer_auto_restore_focus': 0,
-      \ 'disable_drawer_auto_restore_winfixwidth': 0,
       \ 'default_hidden': 0,
       \ 'default_include': '',
       \ 'default_exclude': '',

autoload/fern/internal/drawer.vim

@@ -50,7 +50,6 @@ function! fern#internal#drawer#init() abort
   call fern#internal#drawer#auto_resize#init()
   call fern#internal#drawer#auto_winfixwidth#init()
   call fern#internal#drawer#auto_restore_focus#init()
-  call fern#internal#drawer#auto_restore_winfixwidth#init()
   call fern#internal#drawer#smart_quit#init()
   call fern#internal#drawer#hover_popup#init()
   call fern#internal#drawer#resize()

autoload/fern/internal/drawer/auto_restore_winfixwidth.vim

@@ -500,12 +500,6 @@ VARIABLE						*fern-variable*
 <
 	Default: 0 
 
-*g:fern#disable_drawer_auto_restore_winfixwidth*
-	Set 1 to disable automatically restore 'winfixwidth' on |BufWinLeave|
-	autocmd.
-
-	Default: 0
-
 *g:fern#default_hidden*
 	Set 1 to enter hidden mode (show hidden files) in default.
 	Default: 0