How to remove a file after adding in git

How to remove a file after adding in git, - How to undo a file being added in  in stage.

I had some changes in my local and wanted to push to the git repo. But unfortunately I added a file that was not required .  How to remove a file after adding to git ( Before pushing the changes)

git reset < file name >

Reference:
http://data.agaric.com/undo-git-add-remove-files-staged-git-commit