Remove logic in HB to set Nest frequency based off sync mode
Remove logic in HB to set Nest frequency based off sync mode

The p9_mss_freq_system HWP is setting the frequency, so removing the
additional logic to set it.

Change-Id: I2effcaf7091580ca072a7bd26d6aebb23aa94ca9
RTC:161197
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/31653
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Reviewed-by: Andres A. Lugo-Reyes <1e80b37233adece4fe8991e4578aec38a057d106@us.ibm.com>
Reviewed-by: Matt Derksen <dfaaf609b81bd1529ae3a1d95ea4eeed3f78c848@us.ibm.com>
Reviewed-by: Daniel M. Crowell <912029ca9254ac7b5854e56910561d682e1fa2d0@us.ibm.com>

Over-enthusiastic/hostboot,Over-enthusiastic/hostboot,Over-enthusiastic/hostboot,Over-enthusiastic/hostboot,Over-enthusiastic/hostboot