Does someone know any anti-virus software that deletes only viruses from infected files and not whole infected files ? I really need this ASAP. And names without links will be enough, I think.
Because of how viruses work, this generally isn't possible. Attempting to remove the bad part of the program is still removing a piece of the program. It's like saying "can you cut this cancer out of me without removing a piece of my body?" Well, no, because one is part of the other so no matter what things are getting removed. And unlike people, programs need to be 100% intact in order to function correctly. So even if it could be done, you'd still have a broken program at the end of it.
I suggest finding a fresh copy of whatever the original program was. Hopefully its still available. If not, looking for an alternative is probably a lot easier and saner than attempting to perform program surgery.