WordPress added support for modern emoji characters in WordPress 4.2. If you don’t use emoji in your site, this module disables emojis and prevent all its scripts from running on the site.
Activate the Disable Emojis Module
In the Admin Optimizer page, click to enable the Disable Emojis module. Press Save Changes to save the changes.

No configuration is required for this module to work.
Check if the Disable Emojis is Working
Before activating this module, check the source code (right-click on the web page and click “Inspect”) of your frontend site. In the <head>
section, you should see the emojis stylesheet.

After activating the module, check the source code again. The emojis stylesheet will be gone.