Need to hide the first row of hours, Row has no TR element

Hello,
The business I'm setting up starts at 9h30 but the weekly calendar begins at 9h00, so I need to remove the second row on the table (because for some unknown reason it shows up as busy and not unavailable). However, that row starts with a <tbody> with no <tr> element, and I haven't been able to figure out how to target those <td> elements with CSS to hide them.

My testing site is at http://beta.madison.pt/?page_id=141 and here is the generated code:

<table width='100%' >
<thead>
<tr>
<th class="hourmin_column">  </th>
<th>2ª</th><th>3ª</th><th>4ª</th><th>5ª</th><th>6ª</th><th>S</th><th>D</th>
</tr>
</thead>
<tbody>
<td
class='appointments-weekly-calendar-hours-mins'>9:00 - 9:30</td>
<td class="notpossible app_past" title="14 Setembro, 2015 9:00">input type="hidden" class="appointments_take_appointment" value="0:1:0:1442221200:1442223000:141" /></td>
<td class="notpossible app_past" title="15 Setembro, 2015 9:00"><input type="hidden" class="appointments_take_appointment" value="0:1:0:1442307600:1442309400:141" /></td>
<td class="busy" title="16 Setembro, 2015 9:00"><input type="hidden" class="appointments_take_appointment" value="0:1:0:1442394000:1442395800:141" /></td>
<td class="busy" title="17 Setembro, 2015 9:00"><input type="hidden" class="appointments_take_appointment" value="0:1:0:1442480400:1442482200:141" /></td>
<td class="busy" title="18 Setembro, 2015 9:00"><input type="hidden" class="appointments_take_appointment" value="0:1:0:1442566800:1442568600:141" /></td>
<td class="busy" title="19 Setembro, 2015 9:00"><input type="hidden" class="appointments_take_appointment" value="0:1:0:1442653200:1442655000:141" /></td>
<td class="busy" title="20 Setembro, 2015 9:00"><input type="hidden" class="appointments_take_appointment" value="0:1:0:1442739600:1442741400:141" /></td></tr>

Can you help me out with this, please?