warning was:
Source Variable "Var.Execution_Control.PhaseLists.tabbox.
PFGroupChat.tab.
SYSF_SFTF_IMS_CallTerm_PF_GroupChat_not_expected_message_more_SC.
TerminateGroup" is read-only or value is not allowed

Change-Id: I144117cee72bfd98f345a52252a26a13d4489bb4
Signed-off-by: Balazs Barcsik <balazs.barcsik@gmail.com>