Delete row ('1953', '20430') from daily_volatility

ticker_id 1953
day 20430
implied_open 0.1984313483298443
implied_high 0.2143058561962319
implied_low 0.1984313483298443
implied_close 0.2095435038363156
historical_open 0.1904940943966505
historical_high 0.1904940943966505
historical_low 0.1904940943966505
historical_close 0.1904940943966505
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