Should I close my first credit card

I opened up my first secured cc with PNC 1 year and 6 months ago. It has a monthly fee of $3 I was initially informed by the bank that once I have one year with the cc my initial $300 deposit was going to be refunded. Turns out that was a lie and now I’m stuck with this card that gives me no benefit and has a monthly fee.

I have a discover card with no fees and cash back. The card is only 9 months old. This makes my average credit history 1 year and 1 month.

Is it worth closing the PNC card? How big of an impact will this have on my credit?