[рони]

на чистом javascript.

<meta charset="utf-8">
<style type="text/css">
.hide{
  display: none;
}

</style>
<table>
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
        <td>4</td>
        <td>5</td>
        <td>6</td>
        <td>7</td>
        <td>8</td>
        <td>9</td>
        <td>10</td>
        <td>11</td>
    </tr>
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
        <td>4</td>
        <td>5</td>
        <td>6</td>
        <td>7</td>
        <td>8</td>
        <td>9</td>
        <td>10</td>
        <td>11</td>
    </tr>
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
        <td>4</td>
        <td>5</td>
        <td>6</td>
        <td>7</td>
        <td>8</td>
        <td>9</td>
        <td>10</td>
        <td>11</td>
    </tr>
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
        <td>4</td>
        <td>5</td>
        <td>6</td>
        <td>7</td>
        <td>8</td>
        <td>9</td>
        <td>10</td>
        <td>11</td>
    </tr>
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
        <td>4</td>
        <td>5</td>
        <td>6</td>
        <td>7</td>
        <td>8</td>
        <td>9</td>
        <td>10</td>
        <td>11</td>
    </tr>
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
        <td>4</td>
        <td>5</td>
        <td>6</td>
        <td>7</td>
        <td>8</td>
        <td>9</td>
        <td>10</td>
        <td>11</td>
    </tr>
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
        <td>4</td>
        <td>5</td>
        <td>6</td>
        <td>7</td>
        <td>8</td>
        <td>9</td>
        <td>10</td>
        <td>11</td>
    </tr>
</table>

<script>
  [].forEach.call( document.querySelectorAll('td:nth-child(5)'), function(el) {
         el.classList.add('hide');
  });

</script>