So while I loved fighting Dragons it is a bit old. Is there any way to either mod out or get rid of dragons on the PC version after the main quest is over?

theres a mod called 'clear skies' on nexus, but i havent tried it myself.

maybe you can also go back to the queststage of "unbound"(the first quest in the game) with console commands.

You must hunt them all down individually. If i'm not mistaken, there are over 9000.