Delete row ('104', '20515') from daily_volatility

ticker_id 104
day 20515
implied_open 0.8429363677051787
implied_high 1.128677509300154
implied_low 0.7000657969076907
implied_close 0.9921567416492215
historical_open 0.9159591038905613
historical_high 0.9159591038905613
historical_low 0.9159591038905613
historical_close 0.9159591038905613
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