Remove unused function for computing string length (#418)
Remove unused function for computing string length (#418)

This function has not been used since commit
4cdd0cf4f48d0c2064700c4fc60083bc0b3f6693, when we started performing
git-checks asynchronously.
joshuarubin/dotfiles,sindresorhus/pure,joshuarubin/dotfiles,jaredru/zsh-pure,joshuarubin/dotfiles,forivall/pure,joshuarubin/dotfiles,kgrz/pure