WordPress loads emojis in the header of the website automatically and you cannot remove it with easy way.

WordPress loads a script which is wp-emoji-release.min.js and a inline css.

Many webmasters do not need this emojis. In this case, loading this js source and inline css is so unnecessary so you should consider removing this feature. If you remove the emojis feature, you can reduce the size of page 5.5kb

Just you need to enable “Disable Emojis” option and save the settings.