Disable sanity check (redundant) in skiplist.h
Disable sanity check (redundant) in skiplist.h

tempbottle/HyperLevelDB,norton/HyperLevelDB,influxdb/HyperLevelDB,norton/HyperLevelDB,yonglehou/HyperLevelDB,rescrv/HyperLevelDB,influxdb/HyperLevelDB,rescrv/HyperLevelDB,dyu-deploy/HyperLevelDB,yonglehou/HyperLevelDB,dyu-deploy/HyperLevelDB,tempbottle/HyperLevelDB