Remove an unused node type

Remove remnants of a node type that is no longer used.  This
originated in revision 8408f96615267ab410063e411468526e90ff8d41 when
we needed an image of 12.04 with a newer kernel.  Revision
2da6d623e0e0af6f9c60fa4e733f02114daca7e7 removed the need for this by
allowing usage of trusty, which is even newer than what this node type
was installing (saucy kernel).

Change-Id: I8787be8369f51c1188d1125190e06f3d3b32f018
Merge "Remove an unused node type"