How to delete 2 recurring Trojans?

"ClamXav" has its own user forum. That's where you should go with any questions about it. It's probably throwing a false positive. Regardless, Windows malware can't affect you directly unless you run Windows.

I've done some preliminary checking on this for you and can pass that on in the ClamXav Forum.

Please provide detailed infomation on what ClamXav has found, after completing the scan by clicking in the top pane of the ClamXav window where it shows the Infection / File Name / Status to make sure it's in front and type the key combinations <Command>-A, <Command>-C (or choose "Select-All", "Copy" from the "Edit" menu) to copy the information to your clipboard, then come back here and type <Command>-V or choose "Paste" to show us what was found where.