Delete row ('1953', '20620') from daily_volatility

ticker_id 1953
day 20620
implied_open 0.2746289860885045
implied_high 0.277803887661782
implied_low 0.2666917321553107
implied_close 0.271454084515227
historical_open 0.2349427164225357
historical_high 0.2349427164225357
historical_low 0.2349427164225357
historical_close 0.2349427164225357
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