HI Cathy,
You can go to header.php file in your theme folder and you can remove this command from your header.php.
Hope this will resolve your problem ??
<div id=”header-right” class=”header-sidebar”>
<aside id=”search-box”><!–start of #search-box –>
<form method=”get” id=”searchform” class=”searchform” action=”https://kathrynskitchenblog.com/” role=”search”>
<label for=”s” class=”screen-reader-text”>Search</label>
<input type=”search” class=”field” name=”s” value=”” id=”s” placeholder=”Search …”>
</form>
</aside><!– end of #search-box –>
</div>