If you're using windows it should be in Username > Appdata > Roaming > Huntercoin, or search %appdata%. Within that directory you'll have your huntercoin.conf file. Open it with notepad and just delete the text with 178.32.31.41...
I have no such file. I have windows 7
Right click within that directory, go to new, then text document. Open up the text document and write this within it:
addnode=192.241.222.65
addnode=192.81.209.210
Then, save as huntercoin.conf