maybe remove xah-fly-use-esc-c-g

[xahlee]

hi @wi11dey , i think i like to remove xah-fly-use-esc-c-g. because:

1 customize-group on it does not work. require restart.
2 esc is not in a bad position on normal PC.
3 When in terminal, esc is critical for Meta, when the terminal does not have proper setup for meta key.
4 possible, but not likely, i'd originally like esc to be HOME, as the default key to switch to command mode. But because esc is in bad position, and critical in emacs run in terminal, so i haven't done so.
5 esc as C-g does not work 100% of the time.

i the reasons above may be lame. But i feel it's better that way. Am gonna do a commit. but if you feel otherwise, please let me know!

[wi11dey]

Makes sense, I also do not like the esc position on pcs.

Also not a fan of pressing control, so still trying to find a quick key on normal keyboard that I can use to get out of the minibuffer or recursive edits quickly... will let you know if I think of anything 😄