Delete row ('2539', '20193') from daily_volatility

ticker_id 2539
day 20193
implied_open 0.5222713088041502
implied_high 0.5222713088041502
implied_low 0.452423474192045
implied_close 0.4619481789118776
historical_open 0.6222807083623917
historical_high 0.6222807083623917
historical_low 0.6222807083623917
historical_close 0.6222807083623917
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