Delete row ('1953', '20710') from daily_volatility

ticker_id 1953
day 20710
implied_open 0.2333552656358969
implied_high 0.2460548719290069
implied_low 0.2333552656358969
implied_close 0.2428799703557294
historical_open 0.1904940943966505
historical_high 0.1904940943966505
historical_low 0.1904940943966505
historical_close 0.1904940943966505
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