title: Remove header index in pandas Dataframe
body: <p>I have the following dataframe :</p>
  <pre><code>
                              0                        1         2    ... 630 631 632
  0                         index                MATRICULE    ID_UEV  ...            
  1       9936-25-3989-4-000-0000  9936-25-3989-4-000-0000  01045406  ...            
  2       9739-83-9737-8-001-0302  9739-83-9737-8-001-0302  01038232  ...            
  3       9754-37-9664-9-000-0000  9754-37-9664-9-000-0000  02004842  ...            
  4       8134-96-8810-1-000-0000  8134-96-8810-1-000-0000  04007065  ...  
  </code></pre>
  <p>How can I remove the first row/index so I can have index MATRICULE, ID_UEV as a header</p>
  <pre><code>
  0                         index                MATRICULE    ID_UEV  ...            
  1       9936-25-3989-4-000-0000  9936-25-3989-4-000-0000  01045406  ...            
  2       9739-83-9737-8-001-0302  9739-83-9737-8-001-0302  01038232  ...            
  3       9754-37-9664-9-000-0000  9754-37-9664-9-000-0000  02004842  ...            
  4       8134-96-8810-1-000-0000  8134-96-8810-1-000-0000  04007065  ...  
  </code></pre>