Well, discussions of whether or not it’s wise aside, to directly answer OP’s question:
While there’s no userscript that’ll allow you to skip the readings of kanji, you could install the Override script, which allows you to mark any answer you give as being correct.
I wouldn’t, though.
(Aside from anything else, there’s several kanji in later lessons with no related vocab items at all, meaning the kanji lesson is the only exposure you’ll get.)