title: ec2-delete-tags not working
body: <p>I am using ec2-api-tools-1.6.7.3.</p>
  
  <p>I want to delete a tag using CLI:</p>
  
  <p>I have the CLI commands properly configured.</p>
  
  <p>When i run </p>
  
  <pre><code>ec2-delete-tags -O &lt;aws_access_key_id&gt; -W &lt;aws_secret_access_key&gt; --region &lt;my_region&gt; &lt;instance_id&gt; --tag &lt;my_tag&gt;
  </code></pre>
  
  <p>it returns</p>
  
  <pre><code>TAG instance &lt;instance_id&gt; &lt;my_tag&gt; &lt;my_tag_value&gt;
  </code></pre>
  
  <p>However I see that the instance still has the tag available with it.I have also tried refreshing the console still no help.</p>