gb/gprs_bssgp: remove superfluous whitespace

Change-Id: Ic66f7e640cd473fa2c8473a3e91f57332ae9bf6a
diff --git a/src/gb/gprs_bssgp.c b/src/gb/gprs_bssgp.c
index fa4e187..9c119fb 100644
--- a/src/gb/gprs_bssgp.c
+++ b/src/gb/gprs_bssgp.c
@@ -73,7 +73,7 @@
 			   uint32_t llc_pdu_len, void *priv);
 
 
-/* callback to be backward compatible with  old users which do not set the bssgp_ns_send function */
+/* callback to be backward compatible with old users which do not set the bssgp_ns_send function */
 static int _gprs_ns_sendmsg(void *ctx, struct msgb *msg)
 {
 	return gprs_ns_sendmsg(bssgp_nsi, msg);