Question about dll injection tests....

I use comodo firewall with all custom settings and I passed all three tests but I was wondering how or if I can remove the injected .dll from explorer.exe. I deleted all the test files from the desktop where i downloaded them to, but now anytime something tries to access the web with explorer.exe as the parent (which is practically everything) the fireall tries to block it. I know that the .dll is harmless so do I just set my firewall to allow it and forget about it or can i remove it and fix explorer.exe somehow. I don’t know as much about computers as I think I do but I know a bit so you can get technical if you need to I’ll figure it out.