Clean up scripts

- the binfmt script is not needed
- rename the script to instal in Docker for Mac

Signed-off-by: Justin Cormack <justin.cormack@docker.com>

scripts/binfmt.sh

@@ -1,13 +0,0 @@
-#!/bin/sh
-
-for f in /proc/sys/fs/binfmt_misc/qemu*
-do
-	NAME=$(basename $f)
-	MAGIC=$(cat $f | grep '^magic' | sed 's/^magic //' | sed 's/\(..\)/\\x\1/g')
-	OFFSET=$(cat $f | grep '^offset' | sed 's/^offset //')
-	MASK=$(cat $f | grep '^mask' | sed 's/^mask //' | sed 's/\(..\)/\\x\1/g')
-	EXEC="/usr/bin/${NAME}-static"
-	FLAGS=$(cat $f | grep '^flags:' | sed 's/^flags: //')
-
-	printf "\techo \":${NAME}:M:${OFFSET}:${MAGIC}:${MASK}:${EXEC}:${FLAGS}\" > /proc/sys/fs/binfmt_misc/register\n"
-done