[BashShell] vi, ls color 제거

1, ls color 제거

https://www.cyberciti.biz/faq/how-to-turn-on-or-off-colors-in-bash/

2. vi color 제거

https://www.cyberciti.biz/faq/turn-on-or-off-color-syntax-highlighting-in-vi-or-vim/

vimrc 에 colorschema 없애거나 syntax off 시키면 됨.