NB! It seems this console command is not compatible with CS2.
Command Profile

REMOVEID

CS:GO

This command removes the specified user ID from your server's ban list.

Syntax
removeid [Steam ID]

Description

This command removes the specified user ID from your server's ban list.

Syntax And Arguments

removeid [Steam ID]
Steam ID The steam ID of the user you wish to unban.

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Related Commands

mp_autokick

This command sets whether or not the auto kick feature should be enabled. The auto kick feature kicks people for being idle (AFK) and team damage. Default is 1 (enabled).

cl_hideserverip

This console command is used to hide the IP of your server in your console. This is particularly useful if you're streaming and don't want viewers to be able to catch your IP address, giving them the chance the DDoS the server.

banid

This command will ban the user with the specified ID from the server, and add them to the banlist so that they cannot reconnect. The user ID of a user can be obtained by typing status into the console: the user ID is first number before a player's name in the list of players that is printed by that command.

sv_maxvelocity

This command sets the maximum speed any moving object in the game can reach. Default is 3500. Use sv_maxspeed for player speed.

changelevel

This command is used to change the map you're playing on.

rcon

This command will issue the specified rcon command (i.e. issues the specified command on your server). Rcon means remote console - it allows you to execute server commands from the client.

rcon_address

The IP address of the remote console you wish to connect to (default is the address of your own server). Change this only if the rcon address for the server you are connected to is different from the server's IP.

rcon_password

This command will authenticate you for rcon with the specified password.