library/L1CTL_PortType.ttcn: use templates from GSM_RR_Types

Get rid of template t_IMM_ASS, which is a part of L1CTL_Types.ttcn.
Prepare generic (for both CS and PS) template on top of tr_IMM_ASS,
and use it in f_L1CTL_WAIT_IMM_ASS().

Change-Id: I3a410ec3c41e3eefd23071bfb0d80feda82177a5
2 files changed