Remove FlexRAN

- Remove any FlexRAN code
- Cleanup config files
- Remove LFDS7, libyaml dependencies

openair2/RRC/LTE/L2_interface.c

@@ -47,7 +47,6 @@
 
 #include "intertask_interface.h"
 
-#include "flexran_agent_extern.h"
 #include "openair2/F1AP/f1ap_du_rrc_message_transfer.h"
 
 extern RAN_CONTEXT_t RC;
@@ -405,11 +404,6 @@ void mac_eNB_rrc_ul_failure(const module_id_t Mod_instP,
     LOG_W(RRC,"Frame %d, Subframe %d: UL failure: UE %x unknown \n",frameP,subframeP,rntiP);
   }
 
-  if (flexran_agent_get_rrc_xface(Mod_instP)) {
-    flexran_agent_get_rrc_xface(Mod_instP)->flexran_agent_notify_ue_state_change(Mod_instP,
-        rntiP, PROTOCOL__FLEX_UE_STATE_CHANGE_TYPE__FLUESC_DEACTIVATED);
-  }
-
   //rrc_mac_remove_ue(Mod_instP,rntiP);
 }