no such thing that I'm aware of... Are you referring to/using the Custom Browser dock?
In the drop down menu under "Docks", its just labeled as "Chat". Its always been this way for me, and I get twitch chat through this dock. I dont believe I ever installed any extra dock, it was just always there.
As far as I remember from this plugin, it replaces the chat dock with it's own.
Anyway, looking at all the new stuff and features you have now on the Twitch Control Panel you don't need anymore this docks, plus you can see in there the stream.
If you only stream to Twitch you can use the better alerts Twitch have and you can add other stuff from this third party alerts services as you need directly into the alerts system in Twitch.
And the plugin causes multiple issues every time OBS updates.
To fully remove it you need to run the uninstaller provided by them, then go to %appdata%\obs-studio\ and manually delete all the remaining files from the plugin because it keeps interacting with OBS causing more issues. Now uninstall and reinstall OBS.
Just backup the profiles and scene collections before you start this process.
There are 2 chat docks, as far as I can tell. One is under "docks", which is just labeled "Chat". It has always been there, and I dont believe I ever added anything to OBS to get it to be there.
The other is under StreamElements, SE.LiveDocks, Twitch Chat. I am *not* using the SE chat dock (unless Im being told they both are the same thing; I dont know anything about the technicals, I just see two different chat docks, labeled differently under different menus).
I rarely use the twitch stream manager except for some specific commands sometimes. Im usually on another browser page. OBS is almost always whats up on my second monitor, and I multistream, so OBS has the 3 chats I need to look at all in one place, the audio mixer, activity feed, etc. I feel OBS is better than the twitch stream manager mostly.