src/utils/file.js
function remove(repoState, filepath) {
    if (!exists(repoState, filepath)) {
        throw error.fileNotFound(filepath);
    }

    const change = Change.createRemove();
    return ChangeUtils.setChange(repoState, filepath, change);
}
function remove(repoState, filepath) {
    if (!exists(repoState, filepath)) {
        throw error.fileNotFound(filepath);
    }

    const change = Change.createRemove();
    return ChangeUtils.setChange(repoState, filepath, change);
}
Remove a file
@return {RepositoryState}