nodejs: drop npm as nodesource takes care of that

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>

configs/bb.org-debian-jessie-lxqt-4gb-v4.1.conf

@@ -35,7 +35,7 @@ deb_mirror=""
 #python-2.7: due to: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=769106
 #
 deb_additional_pkgs="bmap-tools libopencv-dev libpython2.7-dev lsb-release nodejs \
-npm pastebinit pylint python-dbus python-flask python-dev python-minimal python-opencv \
+pastebinit pylint python-dbus python-flask python-dev python-minimal python-opencv \
 python-pip vim-nox"
 ##
 rfs_username="debian"