frame_relay, gprs_ns2_fr: Fix log messages, remove unused struct

Fix typo and remove any reference to GRE from gprs_ns2_fr.c.
GRE code is in gprs_ns2_frgre.c

Change-Id: I51c756f3c9d918552591bf87861cb4799721ac37
diff --git a/src/gb/frame_relay.c b/src/gb/frame_relay.c
index 4d1df67..2c252fd 100644
--- a/src/gb/frame_relay.c
+++ b/src/gb/frame_relay.c
@@ -652,7 +652,7 @@
 
 	/* check for mandatory IEs */
 	if (!TLVP_PRES_LEN(tp, Q933_IEI_REPORT_TYPE, 1)) {
-		LOGPFRL(link, LOGL_NOTICE, "Rx STATUSL: Missing TLV Q933 Report Type\n");
+		LOGPFRL(link, LOGL_NOTICE, "Rx STATUS: Missing TLV Q933 Report Type\n");
 		return -1;
 	}