rm duplicate warning callouts in Input Groups docs

docs/components.html

@@ -821,15 +821,6 @@ <h2 id="input-groups-basic">Basic example</h2>
 </div>
 {% endhighlight %}
 
-  <div class="bs-callout bs-callout-warning">
-    <h4>Tooltips &amp; popovers in input groups require special setting</h4>
-    <p>When using tooltips or popovers on elements within an <code>.input-group</code>, you'll have to specify the option <code>container: 'body'</code> to avoid unwanted side effects (such as the element growing wider and/or losing its rounded corners when the tooltip or popover is triggered).</p>
-  </div>
-  <div class="bs-callout bs-callout-warning">
-    <h4>Don't mix with other components</h4>
-    <p>Do not mix form groups or grid column classes directly with input groups. Instead, nest the input group inside of the form group or grid-related element.</p>
-  </div>
-
   <h2 id="input-groups-sizing">Sizing</h2>
   <p>Add the relative form sizing classes to the <code>.input-group</code> itself and contents within will automatically resize—no need for repeating the form control size classes on each element.</p>
   <form class="bs-example bs-example-form" role="form">