Remove nonexistent samsunggalaxy connection

[advaith1]

The connection service list includes a samsunggalaxy connection which seems to not actually exist. There is a Samsung galaxy activity, but that works through OAuth2, not a Discord connection.

from @Jupith:

{
    "code": "BASE_TYPE_CHOICES",
    "message": "Value must be one of ('skype', 'spotify', 'leagueoflegends', 'steam', 'battlenet', 'twitch', 'epicgames', 'twitter', 'youtube', 'github', 'reddit', 'facebook', 'contacts', 'playstation', 'xbox')."
}