[FIX] mail: remove emojis 3:

There was 3 keys for the same icon 😠 while one of them is usually used
in normal text. For example:

- Item 1:
- Item 2:
- Item 3:

The last one would convert to `- Item 😠`

This PR removes one of the above to keep the other two

closes odoo/odoo#77075

X-original-commit: 45e9636c2e0457d3bc4ea1d346ff71ed6824bbe1
Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>

addons/mail/static/src/js/emojis.js

@@ -59,7 +59,6 @@ var data = {
     ":'o":            "😨",
     "3:(":            "😠",
     ">:(":            "😠", // alt.
-    "3:":             "😠", // alt.
     "3:)":            "😈",
     ">:)":            "😈", // alt.
     ":*":             "😘",