Community admins can do the theme changes by adding a CSS code very simply. To makes the theme changes like this, go to your Admin Panel > Theme > Advanced Setting > Additional CSS.
Then insert the CSS code related to the changes you want to apply.
1. If you want the emojis to be deleted only from the home page, insert the CSS code below:
.main-sidebar .emoji {
display: none !important;
}
2. If you want the emojis to be deleted from everywhere, including home page, admin panel menu, and the home page on the mobile view, insert the following code:
.emoji {
display: none !important;
}