pmnetconfigmanager-stub: Remove unused recipe

* P_V was removed in:
  commit 2e3aa38b188d081b6f6d106edf50940925936d6c
  Author: Martin Jansa <martin.jansa@palm.com>
  Date:   Tue Dec 18 11:05:42 2012 +0100

    webos-image: webos-connman-adapter=1,v1.0.0

    - Add webos-connman-adapter and connman to webos-image
    - Remove the pmnetconfigmanager stub

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <martin.jansa@palm.com>
Change-Id: I5ecd9f04b35b0475200507ab87ef34ec54a03d57
Reviewed-on: https://g2g.palm.com/1598
Reviewed-by: Build Verification
Reviewed-by: Martin Jansa <martin.jansa@palm.com>
Tested-by: Martin Jansa <martin.jansa@palm.com>
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Reviewed-by: Keith Derrick <keith.derrick@lge.com>