Drop old nvp extension file

The resource alias is unchanged so there is really
no reason of dragging this forward.

If API clients are using the name or the description
in order to play with a server's extension they are
doing it wrong so they deserve the grief caused
by this change.

Change-Id: I99086c11a0e4a0b0af479e0e3d1fbe92f8ff5988
Closes-bug: #1285999
Merge "Drop old nvp extension file"