remove arptest

tampa!
arptest.pmtpa.wmnet has address 10.0.5.4

eqiad?
Host arptest.eqiad.wmnet not found: 3(NXDOMAIN)

Change-Id: I676a7fa75c4809a83ce03f24a390e2f76e1d5713
remove api.svc.pmtpa.wmnet

Change-Id: I1ec40a1d192fbbaaa45733a065471ee59fa9d628