menuconfig: remove unused global variable

_menu_scroll is declared as global but never used in _jump_to.
Removing the unnecessary declaration.

Signed-off-by: Benjamin Cabé <[email protected]>

Author: kartben

menuconfig.py

@@ -1148,7 +1148,6 @@ def _jump_to(node):
     global _cur_menu
     global _shown
     global _sel_node_i
-    global _menu_scroll
     global _show_all
     global _parent_screen_rows