Delete row ('543', '20160') from daily_volatility

ticker_id 543
day 20160
implied_open 0.5254462103774277
implied_high 0.5571952261102028
implied_low 0.523858759590789
implied_close 0.5349709150972602
historical_open 0.6143434544291979
historical_high 0.6143434544291979
historical_low 0.6143434544291979
historical_close 0.6143434544291979
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