local/bin: Remove unused 'preview'.

This was mostly useful for 'ranger'.

.local/bin/preview

@@ -1,82 +0,0 @@
-#!/bin/sh
-
-usage () {
-	cat <<EOF>&2
-Usage: ${0##*/} FILES
-
-Preview FILES:
-
-- If folder, list it.
-
-- For text files, media files and other files supported by ranger's "scope.sh",
-  use the script to preview the file.
-
-- For other files, display some file information.
-
-EOF
-}
-
-[ $# -lt 1 ] && usage && return 1
-[ "$1" = "-h" ] && usage && return
-[ "$1" = "--" ] && shift
-
-ls="ls -1 --color=always"
-if test -t 0; then
-	ls="$ls --indicator-style=classify"
-fi
-if [ "$(uname -o)" = "GNU/Linux" ]; then
-	ls="$ls  --group-directories-first"
-fi
-
-## scope.sh.
-XDG_CONFIG_HOME=${XDG_CONFIG_HOME:-~/.config}
-scope="$XDG_CONFIG_HOME/ranger/scope.sh"
-if [ ! -x "$scope" ]; then
-	XDG_DATA_DIRS=${XDG_DATA_DIRS:-"/usr/local/share"}
-	scope="$XDG_DATA_DIRS/doc/ranger/config/scope.sh"
-	if [ ! -x "$scope" ]; then
-		scope="/usr/share/doc/ranger/config/scope.sh"
-	fi
-fi
-
-## Several files must share the screen space.
-lines=$(expr $(tput lines) / $#)
-[ $lines -lt 1 ] && lines=1
-
-_preview() {
-	## Folders.
-	[ -d "$1" ] && $ls "$1" && return
-
-	buf=$("$scope" "$1" $(tput cols) $lines 2>/dev/null)
-	status=$?
-
-	case $status in
-	1)
-		break ;;
-	2)
-		## Text files
-		sed ${lines}q "$1"
-		return ;;
-	*)
-		echo "$buf" | sed ${lines}q
-		return ;;
-	esac
-
-	## All files.
-	path="$1"
-	[ ! -e "$path" ] && path=$(command -v "$1")
-	[ ! -e "$path" ] && return
-	$ls -l "$path"
-	file "$path" | cut -d':' -f2 | cut -b 2-
-	if command -v pacman >/dev/null 2>&1; then
-		pacman -Qo "$path" 2>/dev/null
-	fi
-}
-
-[ $# -eq 1 ] && _preview "$1" && exit
-
-for i; do
-	## GNU head uses this echo when outputting multiple files.
-	echo "==> $i <=="
-	_preview "$i"
-done