removePackageFromProject(packageName) {
    let packageObject = { name: packageName };

    return this.removePackagesFromProject([packageObject]);
  }
Used to remove a package from the project's `package.json`.

    Generally, this would be done from the `afterInstall` hook, to
    ensure that any package conflicts can be resolved before the
    addon is used.

    @method removePackageFromProject
    @param {String} packageName
    @return {Promise}