decom - remove rose, pdf1 and tingxi from dsh

pdf1 is dead hardware and out of warranty per Rob

rose is decom'ed server per Rob

tingxi is purchase date in 2004 per racktables:)

Change-Id: I8d20cb3e2b24a4410475ee1952168b6f0101bce8
Merge "decom - remove rose, pdf1 and tingxi from dsh" into production