DB/Bnet: increased account OS column size to allow 64 bit logins via battle net server

sql/updates/auth/4.3.4/2019_09_29_00_auth.sql

@@ -0,0 +1 @@
+ALTER TABLE `account` MODIFY COLUMN `os` varchar(5);

src/server/bnetserver/Server/Session.cpp

@@ -497,7 +497,6 @@ void Battlenet::Session::HandleJoinRequestV2(WoWRealm::JoinRequestV2 const& join
     hmac2.Finalize();
 
     memcpy(sessionKey + hmac.GetLength(), hmac2.GetDigest(), hmac2.GetLength());
-    printf("OS = %s \n", _os.c_str());
 
     PreparedStatement* stmt = LoginDatabase.GetPreparedStatement(LOGIN_UPD_LOGONPROOF);
     stmt->setString(0, ByteArrayToHexStr(sessionKey, 40, true).c_str());