javagit/src/main/java/edu/nyu/cs/javagit/client/cli/CliGitRm.java
public GitRmResponse rm(File repository, File path) throws IOException, JavaGitException {
    return processRm(repository, null, path, null);
  }
public GitRmResponse rm(File repository, File path) throws IOException, JavaGitException {
    return processRm(repository, null, path, null);
  }
TODO (jhl388): Add test cases for this class.