Cleanup APSS in processMrw
Cleanup APSS in processMrw

Remove the workaround for channel_ground
and remove PLDM stuff for now

Change-Id: Id5b7696d1e20318ab99535ae9b0d3d75387fb225
RTC:215166
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/105296
Reviewed-by: Roland Veloz <768fb49134ab823c765de70e7067d9f65f5d0a3e@us.ibm.com>
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Tested-by: Jenkins OP Build CI <e610bd72261d3c0a48f1e8ae36832ab00774d426@us.ibm.com>
Reviewed-by: Deborah L McLemore <1938e6bc52a6fb400ff401d42bc5360c2c7aaa30@us.ibm.com>
Tested-by: Jenkins Combined Simics CI <8312af3886dfc9bb930f549023677220805b137e@us.ibm.com>
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Reviewed-by: Martha Broyles <4a3aaab7aa91ec1bb5767c660ca19ce9d55287b0@us.ibm.com>
Reviewed-by: Christopher J Cain <297eb16bc1c817a216c92f148d0f81b635fc885c@us.ibm.com>
Reviewed-by: William G Hoffa <7dd6aa5e78423995d9d7c7ecada5b77ee07f88cc@us.ibm.com>

open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot