handover_logic.c: always do inter-cell channel activation

In commit [1], the channel activation kind was modified out-of-context to use
Immediate Assignment in case of intra-cell re-assignment. This so far hasn't
worked out in tests, so instead stay with the strategy to use
RSL_ACT_INTER_ASYNC also for re-assignment within the same cell. We may move to
RSL_ACT_INTRA_IMM_ASS in a separate patch after proper testing.

[1]: 5eaa4fb821751b70ad2b864d8765ff96bd301996,
     I2d91765c1f9719c64fd99426a872cecc724215db
     "HO: add indicators for inter-cell and async ho, use for chan act type",

Note that so far, no re-assignment within cells is triggered by the current
handover decision algorithm, so the effect will be really noticeable with
handover decision 2 that is coming up.

See feature OS#2949 which asks for implementing actual RR Assignment to
handover within a cell.

Related: OS#2949
Change-Id: Ia3d979094fa16620f1acc5933418797829710ba8
diff --git a/src/libbsc/handover_logic.c b/src/libbsc/handover_logic.c
index 6eada5b..fda28dd 100644
--- a/src/libbsc/handover_logic.c
+++ b/src/libbsc/handover_logic.c
@@ -147,9 +147,7 @@
 
 	/* FIXME: do we have a better idea of the timing advance? */
 	rc = rsl_chan_activate_lchan(new_lchan,
-				     ho->inter_cell
-				       ? (ho->async ? RSL_ACT_INTER_ASYNC : RSL_ACT_INTER_SYNC)
-				       : RSL_ACT_INTRA_IMM_ASS,
+				     ho->async ? RSL_ACT_INTER_ASYNC : RSL_ACT_INTER_SYNC,
 				     ho->ho_ref);
 	if (rc < 0) {
 		LOGP(DHO, LOGL_ERROR, "could not activate channel\n");