code: @NonNull
      @CheckResult
      @Override
      public Flowable<DeleteResults<T>> asRxFlowable(@NonNull BackpressureStrategy backpressureStrategy) {
          return RxJavaUtils.createFlowable(storIOSQLite, this, backpressureStrategy);
      }
docs: Creates {@link io.reactivex.Flowable} which will perform Delete Operation and send result to observer.
  <p>
  Returned {@link io.reactivex.Flowable} will be "Cold Flowable", which means that it performs
  delete only after subscribing to it. Also, it emits the result once.
  <p>
  <dl>
  <dt><b>Scheduler:</b></dt>
  <dd>Operates on {@link StorIOSQLite#defaultRxScheduler()} if not {@code null}.</dd>
  </dl>
  
  @return non-null {@link io.reactivex.Flowable} which will perform Delete Operation.
  and send result to observer.