STOP: remove chiplet enable drop in core_poweron for multicast scom

Key_Cronus_Test=PM_REGRESS

Change-Id: I388c81cc1af356231daa4a11702a3a84dcc222c9
CQ: SW437797
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/62652
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>

import/chips/p9/procedures/ppe_closed/cme/stop_cme/p9_hcd_core_poweron.c

@@ -29,9 +29,6 @@ inline __attribute__((always_inline))
 void
 p9_hcd_core_poweron(uint32_t core)
 {
-    PK_TRACE("Drop chiplet enable via NET_CTRL0[0]");
-    CME_PUTSCOM(CPPM_NC0INDIR_CLR, core, BIT64(0));
-
     PK_TRACE("Assert PCB fence via NET_CTRL0[25]");
     CME_PUTSCOM(CPPM_NC0INDIR_OR, core, BIT64(25));