Remove the option to run twint500.js during install

Doesn't seem to work. Maybe the service has to be install and up first
(cause it worked at one time). Oh well, with the menu option added, the
sysop can just reset it the first time manually.

xtrn/tw2/install-xtrn.ini

@@ -21,6 +21,3 @@ ars  = SYSOP
 [ini:json-service.ini:tw2]
 keys=dir
 values=startup_dir
-
-[exec:twint500.js]
-prompt=Configure and Initialize TW2
\ No newline at end of file