[misc] refactory stage 1

ubuntu/install-fish.sh

@@ -1,12 +0,0 @@
-#!/bin/bash
-
-set -e
-sudo add-apt-repository ppa:fish-shell/release-3 -y
-sudo apt update
-sudo apt install fish -y
-
-DEFAULT_SHELL=$(getent passwd $USER | cut -d: -f7)
-FISH_SHELL=$(which fish)
-if [ "$DEFAULT_SHELL" != "$FISH_SHELL" ]; then
-chsh -s $FISH_SHELL
-fi