rspro_client_fsm(): Remove outdated/wrong comment from code

Since Change-Id I55d5d61922053fd94e2b5a8cdf0d799b29feec98,
rspro_dec_msg() is no longer taking ownership of the msgb.

Change-Id: Ic1e9f35a2ae82b28dbb4b2ba850c257fa9629cbf
diff --git a/src/rspro_client_fsm.c b/src/rspro_client_fsm.c
index f0a9fff..6be2fef 100644
--- a/src/rspro_client_fsm.c
+++ b/src/rspro_client_fsm.c
@@ -161,8 +161,6 @@
 		switch (he->proto) {
 		case IPAC_PROTO_EXT_RSPRO:
 			LOGPFSM(srvc->fi, "Received RSPRO %s\n", msgb_hexdump(msg));
-			/* respro_dec_msg() takes ownership of the input message buffer in successful
-			 * and unsuccessful cases */
 			pdu = rspro_dec_msg(msg);
 			if (!pdu)
 				break;