Delete row ('53', '20516') from daily_volatility

ticker_id 53
day 20516
implied_open 0.3540015254204422
implied_high 0.355588976207081
implied_low 0.3301897636208609
implied_close 0.3444768207006097
historical_open 0.3825756395799398
historical_high 0.3825756395799398
historical_low 0.3825756395799398
historical_close 0.3825756395799398
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