consolidated update-bl and update-vol into update

update-bl

@@ -1,22 +0,0 @@
-#!/bin/zsh
-
-tail -f ~/.config/xob/xobpipe | xob -s volume &
-if [[ $# -eq 2 ]]; then
-  CHANGE=$1
-  TARGET_FILE=$2
-elif [[ $# -eq 3 ]]; then
-  CHANGE=`expr 0 - $2`
-  TARGET_FILE=$3
-else
-  echo "Improper usage. To increase a value in a file,\nupdate-bl [change] [target_file]."
-  echo "To decrease a value in a file,\nupdate-bl --decrease [change] [target_file]."
-fi
-
-OLDNUM=`cut -f1 $TARGET_FILE`
-NEWNUM=`expr $OLDNUM + $CHANGE`
-
-if [[ $NEWNUM -le 100 && $NEWNUM -ge 0 ]]; then
-  sed -i "s/$OLDNUM/$NEWNUM/g" $TARGET_FILE
-  brightnessctl set $NEWNUM%
-  echo $NEWNUM >> ~/.config/xob/xobpipe
-fi