revert checks

Author: Bitl

README.md

@@ -28,7 +28,6 @@ This base is specific to multiplayer mod projects.
 - Multiplayer NPC support with the BDSBASE_NPC preprocessor definition.
 - Various optional preprocessor definitions for changing TF2's behavior.
 - Menu music in map backgrounds with adjustable volume and mix volume.
-- previous2021 beta detection, allowing players to be informed if they're launching from the wrong SDK 2013 version. This can be disabled with -ignoreprevious2021check.
 
 ## Options/Preprocessor Definitions
 These options are meant to be added to the VPC files (client and server) of the mod you wish to modify.

src/game/client/cdll_client_int.cpp

@@ -1266,34 +1266,13 @@ bool CHLClient::ReplayPostInit()
 #endif
 }
 
-#ifdef BDSBASE
-bool IsNewSDK()
-{
-	return engine->GetProtocolVersion() != 24;
-}
-#endif
-
 //-----------------------------------------------------------------------------
 // Purpose: Called after client & server DLL are loaded and all systems initialized
 //-----------------------------------------------------------------------------
 void CHLClient::PostInit()
 {
 	IGameSystem::PostInitAllSystems();
 
-#ifdef BDSBASE
-	if (!CommandLine()->FindParm("-forcelaunch") && !IsNewSDK())
-	{
-		const char* modName = "";
-		KeyValuesAD pKVGameInfo("GameInfo");
-		if (pKVGameInfo->LoadFromFile(g_pFullFileSystem, "gameinfo.txt", "MOD"))
-		{
-			modName = pKVGameInfo->GetString("game", "Half-Life 2");
-		}
-
-		Error("The default branch or the upcoming beta must be selected for Source SDK Base 2013 Multiplayer to play %s.", modName);
-	}
-#endif
-
 #ifdef SIXENSE
 	// allow sixnese input to perform post-init operations
 	g_pSixenseInput->PostInit();