Vl53l1x sensors from Polou

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Hello, Thank you for helping me .I am looking into this hardware connections and programming.
Can you please explain to me why the resistors where not used in this connection ( cos the last image I send was not of the pololu board)

Can you elaborate if the above programming set the Xshut to high impedance state instead of high(5v) and how we can add that cos I got like zero clue. (Can you explain this also in very simple terms , cos am really new to both arduino programming and electronics )
Thank you so much