ASACORE-1154: Update nvramtest to exercise AJ_NVRAM_Peek() API

 - Also removed stale unused variables to get rid of warnings

Change-Id: If4267a0823e5d029cd9831776315aba01c7507ba
Signed-off-by: James Prestwood <jprestwo@qce.qualcomm.com>
Merge "ASACORE-1154: Update nvramtest to exercise AJ_NVRAM_Peek() API"