nodejs: Remove second nodejs recipe and blacklist cloud9

:Release Notes:
Current webos_enhanced_submissions bbclass doesn't work well with
multiple recipes with different versions. We would like to use:
recipes-upstreamable/nodejs/nodejs_0.10.15.bb
but
recipes-webos/nodejs/nodejs.bb
automatically gains the same version through
webos_enhanced_submissions so setting PREFERRED_VERSION doesn't help
much to select between these two.

:Detailed Notes:
Also move PREFERRED_VERSION to right section.

:Testing Performed:
Build tested only.

:QA Notes:
No change in image.

:Issues Addressed:
[GF-2506] Upgrade Node.js to v0.10

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <martin.jansa@lge.com>
Change-Id: I45a49caadf4b9c3663864fe50cfae1cdf9640da2
Reviewed-on: https://g2g.palm.com/3054
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Tested-by: Susan Montooth <susan.montooth@lge.com>