Delete row ('2387', '19998') from daily_volatility

ticker_id 2387
day 19998
implied_open 0.3873379919398561
implied_high 0.3984501474463274
implied_low 0.3873379919398561
implied_close 0.3952752458730499
historical_open 0.2873285923816146
historical_high 0.2873285923816146
historical_low 0.2873285923816146
historical_close 0.2873285923816146
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