Is there any way to check if a license that i had got removed?

did you try support? https://help.steampowered.com

don't write a ticket, check what it says for bttf. i don't know if it add notes for removed titles.
for example, this is a game i removed.

View attached image.

When a game gets removed from your library, a very noticeable red banner appears at the top of your client informing you of such.
I suppose it's possible you closed client without looking at it, at some point, and missed it in that way..

But no, my removed titles no longer show in Activations either, so that's not a promising sign on your end.

Before anything else, though, restart client and make sure it's not just a syncing error [though I've only ever seen that happen shortly after an activation, and since i'm not seeing it in your game library, this probably isn't the cause].
Past that, you can try contacting the trader. If they're legit, they ought be able to regive you the key in question [especially since it's a Humble gift link].

Similarly, you can use the Humble Order Resender to get access to all received gift links, so if you acquired it but forgot to activate it, it'll pop there. [Not sure if it'd still show if it got removed, but if it was a Humble Revoke, Humble ought be able to give you solid answers if you contact them.]

(Also, as Mullins noted, you can manually check if you yourself removed a game from your library, but afaik it doesn't show if a game was revoked there.)

"I sugest you to make an account on IsThereAnyDeal, they keep an eye on your library and send you an email if something disappear from it(and also tell you about sales and other stuff). You could also check https://store.steampowered.com/account/ to see your games."
read on https://www.steamgifts.com/go/comment/gjt7jHi