Get rid of param 'poll' with constant value

Value 'false' is always passed by all callers of the function, so
there's no need to pass it. Furthermore, since it's false, there's no
need to access poll_fn since RRBP will always be invalid.

Change-Id: Ia48ce2a021865e76e813dedb22aca9c2522c5693
diff --git a/src/bts.cpp b/src/bts.cpp
index fee36be..0443df6 100644
--- a/src/bts.cpp
+++ b/src/bts.cpp
@@ -965,7 +965,7 @@
 	return 0;
 }
 
-void bts_snd_dl_ass(struct gprs_rlcmac_bts *bts, struct gprs_rlcmac_tbf *tbf, bool poll, uint16_t pgroup)
+void bts_snd_dl_ass(struct gprs_rlcmac_bts *bts, struct gprs_rlcmac_tbf *tbf, uint16_t pgroup)
 {
 	uint8_t trx_no = tbf->trx->trx_no;
 	uint8_t ts_no = tbf->first_ts;
@@ -976,12 +976,12 @@
 	bitvec_unhex(immediate_assignment, DUMMY_VEC); /* standard '2B'O padding */
 	/* use request reference that has maximum distance to current time,
 	 * so the assignment will not conflict with possible RACH requests. */
-	LOGP(DRLCMAC, LOGL_DEBUG, " - TRX=%d (%d) TS=%d TA=%d pollFN=%d\n",
-		trx_no, tbf->trx->arfcn, ts_no, tbf->ta(), poll ? tbf->poll_fn : -1);
+	LOGP(DRLCMAC, LOGL_DEBUG, " - TRX=%d (%d) TS=%d TA=%d\n",
+		trx_no, tbf->trx->arfcn, ts_no, tbf->ta());
 	plen = Encoding::write_immediate_assignment(&bts->trx[trx_no].pdch[ts_no],
 						    tbf, immediate_assignment, true, 125,
 						    (tbf->pdch[ts_no]->last_rts_fn + 21216) % GSM_MAX_FN,
-						    tbf->ta(), 7, poll, tbf->poll_fn,
+						    tbf->ta(), 7, false, 0,
 						    bts_get_ms_pwr_alpha(bts), bts->pcu->vty.gamma, -1,
 						    GSM_L1_BURST_TYPE_ACCESS_0);
 	if (plen >= 0) {