How to remove a key of an array? : <p>I need to remove <strong>[picture_names]</strong> from my <code>array</code>. Help me to remove this?</p>

<p><a href="https://i.stack.imgur.com/xOJuX.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xOJuX.jpg" alt="enter image description here"></a></p>
