Fix logging in not working

[d10sfan]

The LoginPacket change in https://github.com/InfiniteRasa/Rasa.NET/pull/137/changes#diff-ff7f02095db56d12b2353c102f6344ccf71fd091d95fdd82d492123a2f3af2a2 broke logging into the client.

 [2026. 10. 05. 15:21:46.155] [Error] Error reading a Login packet from 192.168.1.154, disconnecting client: System.IO.InvalidDataException: Auth login payload contains trailing bytes.
auth-1  |        at Rasa.Extensions.BinaryReaderExtensions.EnsureFullyConsumed(BinaryReader reader, String what) in /app/src/Rasa.Utils/Extensions/BinaryReaderExtensions.cs:line 53
auth-1  |        at Rasa.Packets.Auth.Client.LoginPacket.Read(BinaryReader reader) in /app/src/Rasa.Auth/Packets/Auth/Client/LoginPacket.cs:line 47
auth-1  |        at Rasa.Auth.Client.OnReceive(BufferData data) in /app/src/Rasa.Auth/Auth/Client.cs:line 342
auth-1  | [2026. 10. 05. 15:21:46.155] [Network] *** Client disconnected! Ip: 192.168.1.154
auth-1  | [2026. 10. 05. 15:21:46.156] [Network] Dropping 192.168.1.154: receive failed to start: Cannot access a disposed object.

Removing that line fixed it. This PR removes that line so logging in works again, but would be worth looking into what can be done for those tests that keeps the game working.