code: public boolean remove(JobStatus jobStatus) {
          boolean removed = mJobSet.remove(jobStatus);
          if (!removed) {
              return false;
          }
          if (!jobStatus.isPersisted()) {
              unmarkForBootSession(jobStatus);
          }
          maybeWriteStatusToDiskAsync();
          return removed;
      }
docs: Remove the provided job. Will also delete the job if it was persisted.
  
  @return Whether or not the job existed to be removed.