try removing the section in lines 213-234 in the hud script for the hotkeys window.
for the changing of keys, look through the input section to find the keys you want, then look at the abs script itself to find the attack key.... line 145 for attack, 150 for defend, 185,186 for dash and sneak respectively. for changing the menu key, it was always esc for me, but i dont know where to change it...