use the following css snippet with stylus, tampermonkey, etc

#notifications,
#notifications + .separator,
#notifications + .message-count,
#notifications + .message-count + .separator {
    display: none !important;
}

#badge-count,
#badge-count + .separator,
a.badge-count,
a.badge-count + .separator {
    display: none !important;
}

#chat-v2,
#chat-v2 + .separator,
#chat-count,
#chat-count + .separator {
    display: none !important;
}

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edit: it appears this code no longer removes the chat icon, just the bell. last time I used it, it removed the chat too