gprs_ns2: remove api call gprs_ns2_dynamic_create_nse

The call was only introduced as workaround for the first implementation
of vty. There is no need for this anymore. The configuration can
just add "accept-ipaccess" to the bind to allow creation of dynamic
ipaccess NSE.

Change-Id: Ie924ead6da17657f3da334068c8ada82c8845495
diff --git a/src/gb/gprs_ns2.c b/src/gb/gprs_ns2.c
index 7e273fb..be35513 100644
--- a/src/gb/gprs_ns2.c
+++ b/src/gb/gprs_ns2.c
@@ -874,7 +874,7 @@
 		if (bind->ll != GPRS_NS2_LL_UDP || dialect != GPRS_NS2_DIALECT_IPACCESS)
 			return NS2_CS_SKIPPED;
 
-		if (!bind->nsi->create_nse || !bind->accept_ipaccess)
+		if (!bind->accept_ipaccess)
 			return NS2_CS_SKIPPED;
 
 		nse = gprs_ns2_create_nse(bind->nsi, nsei, bind->ll, dialect);
@@ -1208,18 +1208,6 @@
 	talloc_free(nsi);
 }
 
-/*! Configure whether a NS Instance should dynamically create NSEs based on incoming traffic.
- *  \param nsi the instance to modify
- *  \param create_nse if NSE can be created on receiving package. SGSN set this.
- *  \return 0 on success; negative on error
- */
-int gprs_ns2_dynamic_create_nse(struct gprs_ns2_inst *nsi, bool create_nse)
-{
-	nsi->create_nse = create_nse;
-
-	return 0;
-}
-
 /*! Start the NS-ALIVE FSM in all NS-VCs of given NSE.
  *  \param[in] nse NS Entity in whihc to start NS-ALIVE FSMs */
 void gprs_ns2_start_alive_all_nsvcs(struct gprs_ns2_nse *nse)