Delete row ('1953', '20493') from daily_volatility

ticker_id 1953
day 20493
implied_open 0.2016062499031218
implied_high 0.2238305609160644
implied_low 0.2016062499031218
implied_close 0.2111309546229543
historical_open 0.1936689959699281
historical_high 0.1936689959699281
historical_low 0.1936689959699281
historical_close 0.1936689959699281
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