Do not vendor cookbooks using Berkshelf anymore

Instead, use the Berkshelf support in knife-solo and the
vagrant-berkshelf plugin on Vagrant

cookbooks/nginx/templates/default/nxdisstream.erb

@@ -1,29 +0,0 @@
-#!/bin/sh -e
-
-SYSCONFDIR='<%= node['nginx']['dir'] %>'
-
-if [ -z $1 ]; then
-        echo "Which stream would you like to disable?"
-        echo -n "Your choices are: "
-        ls $SYSCONFDIR/streams-enabled/* | \
-        sed -e "s,$SYSCONFDIR/streams-enabled/,,g" | xargs echo
-        echo -n "Stream name? "
-        read STREAMNAME
-else
-        STREAMNAME=$1
-fi
-
-if [ $STREAMNAME = "default" ]; then
-        PRIORITY="000"
-fi
-
-if ! [ -e $SYSCONFDIR/streams-enabled/$STREAMNAME -o \
-       -e $SYSCONFDIR/streams-enabled/"$PRIORITY"-"$STREAMNAME" ]; then
-        echo "This Stream is already disabled, or does not exist!"
-        exit 1
-fi
-
-if ! rm $SYSCONFDIR/streams-enabled/$STREAMNAME 2>/dev/null; then
-        rm -f $SYSCONFDIR/streams-enabled/"$PRIORITY"-"$STREAMNAME"
-fi
-echo "Stream $STREAMNAME disabled; reload nginx to disable."