tabpanel: remove scroll suboption handling again

Signed-off-by: Christian Brabandt <cb@256bit.org>

autoload/airline/extensions/tabpanel.vim

@@ -106,7 +106,6 @@ def Enable(): void
   &tabpanel = '%!airline#extensions#tabpanel#Get()'
   var cols = get(g:, 'airline#extensions#tabpanel#columns', 20)
   var align = get(g:, 'airline#extensions#tabpanel#align', '')
-  var scroll = get(g:, 'airline#extensions#tabpanel#scroll', 1)
   var scrollbar = get(g:, 'airline#extensions#tabpanel#scrollbar', 1)
   var opts = 'columns:' .. cols
   if !empty(align)
@@ -115,8 +114,6 @@ def Enable(): void
   if mouse_support
     if scrollbar
       opts ..= ',scrollbar'
-    elseif scroll
-      opts ..= ',scroll'
     endif
   endif
   &tabpanelopt = opts

doc/airline.txt

@@ -1485,14 +1485,9 @@ Vim >9.1.1391).
   let g:airline#extensions#tabpanel#align = 'left'
 < default: '' (uses Vim's default)
 
-* enable mouse wheel scrolling over the tabpanel area when the tab list
-  exceeds the visible screen height (requires Vim patch 9.2.386) >
-  let g:airline#extensions#tabpanel#scroll = 1
-< default: 1
-
 * reserve a one-column scrollbar in the tabpanel showing the current scroll
   position; clicking or dragging the thumb jumps to that position (requires
-  Vim patch 9.2.386; implies scroll) >
+  Vim patch 9.2.386) >
   let g:airline#extensions#tabpanel#scrollbar = 1
 < default: 1