Core/Auth: Reverted part of fb43a92cc2 - session key is still needed after logging in to be able to switch realms

src/server/shared/Database/Implementation/LoginDatabase.cpp

@@ -35,7 +35,6 @@ void LoginDatabaseConnection::DoPrepareStatements()
     PrepareStatement(LOGIN_INS_ACCOUNT_AUTO_BANNED, "INSERT INTO account_banned VALUES (?, UNIX_TIMESTAMP(), UNIX_TIMESTAMP()+?, 'Trinity realmd', 'Failed login autoban', 1)", CONNECTION_ASYNC);
     PrepareStatement(LOGIN_DEL_ACCOUNT_BANNED, "DELETE FROM account_banned WHERE id = ?", CONNECTION_ASYNC);
     PrepareStatement(LOGIN_SEL_SESSIONKEY, "SELECT a.sessionkey, a.id, aa.gmlevel  FROM account a LEFT JOIN account_access aa ON (a.id = aa.id) WHERE username = ?", CONNECTION_SYNCH);
-    PrepareStatement(LOGIN_UPD_CLEAR_SESSIONKEY, "UPDATE account SET sessionkey = '' WHERE id = ?", CONNECTION_ASYNC);
     PrepareStatement(LOGIN_UPD_VS, "UPDATE account SET v = ?, s = ? WHERE username = ?", CONNECTION_ASYNC);
     PrepareStatement(LOGIN_UPD_LOGONPROOF, "UPDATE account SET sessionkey = ?, last_ip = ?, last_login = NOW(), locale = ?, failed_logins = 0, os = ? WHERE username = ?", CONNECTION_ASYNC);
     PrepareStatement(LOGIN_SEL_LOGONCHALLENGE, "SELECT a.sha_pass_hash, a.id, a.locked, a.last_ip, aa.gmlevel, a.v, a.s FROM account a LEFT JOIN account_access aa ON (a.id = aa.id) WHERE a.username = ?", CONNECTION_SYNCH);