title: remove rows with today's date pandas
body: <p>I have a df with several columns, and I want to remove rows that have today's date time.</p>
  <pre><code>     col1               col2                  col3                col4
       ABC       2022-08-12 00:03:29.872         123                A1B2
       BCD       2022-08-12 00:02:08.067         234                B1C2
       CDE       2022-08-11 23:57:24.208         345                C1D2   
       DEF       2022-08-11 23:56:55.257         456                D1E2
  </code></pre>
  <p>expected result (assuming today's date is 12th august 2022):</p>
  <pre><code>     col1               col2                  col3                col4
       CDE       2022-08-11 23:57:24.208         345                C1D2   
       DEF       2022-08-11 23:56:55.257         456                D1E2
  </code></pre>
  <p>I tried doing below</p>
  <pre><code>    df[pd.to_datetime(df.col2, errors='coerce') &lt; pd.to_datetime('today')]
  </code></pre>
  <p>but it is not working, I still get rows from today. Can someone please help me with this?</p>