Method erase

tensorflow/core/lib/gtl/flatmap.h:261–266

  }

  size_t erase(const Key& k) {
    auto r = rep_.Find(k);
    if (!r.found) return 0;
    rep_.Erase(r.b, r.index);
    return 1;
  }
  iterator erase(iterator pos) {
    rep_.Erase(pos.b_, pos.i_);
    ++pos;