title: Remove rows of a dataframe based on the row number
body: <p>Suppose that I have a data-frame (<code>DF</code>) and also I have an array like this:</p>
  <pre><code>rm_indexes = np.array([1, 2, 3, 4, 34, 100, 154, 155, 199])
  </code></pre>
  <p>I want to remove row numbers in <code>rm_indexes</code> from <code>DF</code>. One in <code>rm_indexes</code> means row number one (second row of <code>DF</code>), three means third row of data-frame, etc. (the first row is 0). The index column of this data-frame is timestamp.</p>
  <p><strong>PS.</strong> I have many identical timestamps as the index of data-frame.</p>