Delete row ('18', '20735') from daily_volatility

ticker_id 18
day 20735
implied_open 2.308153443772749
implied_high 4.005138334689578
implied_low 1.417593552468408
implied_close 2.763751819538072
historical_open 0.7334022634271045
historical_high 0.7334022634271045
historical_low 0.7334022634271045
historical_close 0.7334022634271045
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