If the file is not modded, just upload a new one overwriting the old file, if you have mods you wish to keep, just copy and paste the code you deleted from the new file.
i use notepad++ to make changes direckly on my server files, and when i dident like it, i make STRG+Z and save(STRG+S).
Then the programm reupload the files, i have the old version on my server =)
I am not at my desk, but the obvious answer is look at the original file included with the zip. No need to ask others to look at something you have sitting on your desktop
And please do as basti says, you should always have the original template intact.... That is what child themes are for.