Revert "Adding p9a support."

This reverts commit 41352b2d444e98639eedc06b1eb0d8da89d4adb3.

Change-Id: Ied32e1771c2a52934dded46c8bf0e53ff9eb58e4
Original-Change-Id: Ic3f2099eff3f5c942ef8fb6916e8ee78ca1a9e82
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/50703
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/64776
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Tested-by: Daniel M. Crowell <dcrowell@us.ibm.com>