what i wanna do is to automatically remove a few lines of code from elements in browser whose js path is as follows <document.querySelector("#movie_player > div.ytp-gradient-top")> /html/body/ytd-app/div1/ytd-page-manager/ytd-watch-flexy/div[3]/div/ytd-player/div/div/div[2]

please just give me an automation method to remove this everytime i log in