reduce compilation warnings in noS1 build to try to pass CI

openair2/ENB_APP/enb_app.c

@@ -43,10 +43,14 @@
 #   include "s1ap_eNB.h"
 #   include "sctp_eNB_task.h"
 #   include "gtpv1u_eNB_task.h"
-# else
-#    define EPC_MODE_ENABLED 0
-# endif
-
+/* temporary warning removale while implementing noS1 */
+/* as config option                                   */
+#   else
+#     ifdef EPC_MODE_ENABLED
+#       undef  EPC_MODE_ENABLED
+#     endif
+#     define EPC_MODE_ENABLED 0
+#   endif
 #   include "x2ap_eNB.h"
 #   include "x2ap_messages_types.h"
 #   define X2AP_ENB_REGISTER_RETRY_DELAY   10

openair2/RRC/LTE/rrc_eNB.c

@@ -85,8 +85,13 @@
 #   else
 #      include "../../S1AP/s1ap_eNB.h"
 #   endif
+/* temporary warning removale while implementing noS1 */
+/* as config option                                   */
 #else
-# define EPC_MODE_ENABLED 0
+#   ifdef EPC_MODE_ENABLED
+#      undef  EPC_MODE_ENABLED
+#   endif
+#   define EPC_MODE_ENABLED 0
 #endif
 
 #include "pdcp.h"

targets/COMMON/create_tasks.c

@@ -33,7 +33,12 @@
 #     include "nas_ue_task.h"
 #     include "udp_eNB_task.h"
 #     include "gtpv1u_eNB_task.h"
+/* temporary warning removale while implementing noS1 */
+/* as config option                                   */
 #   else
+#     ifdef EPC_MODE_ENABLED
+#       undef  EPC_MODE_ENABLED
+#     endif
 #     define EPC_MODE_ENABLED 0
 #   endif
 #   if ENABLE_RAL