Remove unused CI files

ci-scripts/as_ue/oai_ext_app.sh

-#!/bin/bash
-
-ue_id="$1"      # UE id
-duration="$2"   # Sim duration
-
-shift
-shift
-
-function end
-{
-    exit 0
-}
-trap end INT TERM
-
-echo "ip netns exec $ue_id $@ > /tmp/test_${ue_id}.log"
-ip netns exec $ue_id $@ > /tmp/test_$ue_id.log
-
-

ci-scripts/stats_monitor_conf.yaml

-enb :
-  PHR:
-  bler:
-  mcsoff:
-  mcs:
-  graph:
-    page1:
-      PHR:
-      bler:
-      mcsoff:
-      mcs:      
-
-gnb :
-  dlsch_err:
-  dlsch_err_perc_round_1:
-  ulsch_err:
-  ulsch_err_perc_round_1:
-  rt :
-    feprx:
-    feptx_prec:
-    feptx_ofdm:
-    feptx_total:
-    L1 Tx processing:
-    DLSCH encoding:
-    L1 Rx processing:
-    PUSCH inner-receiver:
-    DL & UL scheduling timing:
-    UL Indication:
-    Slot Indication:
-  graph : 
-    page1:
-      dlsch_err:
-      dlsch_err_perc_round_1:
-      ulsch_err:
-      ulsch_err_perc_round_1:
-    page2:    
-      rt.feprx:
-      rt.feptx_prec:
-      rt.feptx_ofdm:
-      rt.feptx_total:
-    page3:
-      rt.L1 Tx processing:
-      rt.DLSCH encoding:
-      rt.L1 Rx processing:
-    page4:
-      rt.PUSCH inner-receiver:
-      rt.DL & UL scheduling timing:
-      rt.UL Indication:
-      rt.Slot Indication: