To delete the left to remove, you would just search the script for INPUT::LEFT, and delete the line. This is the only like I could find:
if Input.repeat?(Input::LEFT) (line 520)
should work
and to remove the reset choice..I couldn't be sure but the script works just like a menu
when 1
when 2 etc...
So whatever choice reset is, just remove it like a menu choice. its when 6 so just go through and delete all lines saying when 6, and delete everything that happens for that choice, then change when 7 to when 6.
You'll also have to mess around with where the words are located...