Remove Interop-F1/Accelleran-CU testing pipeline

We don't have access to the images for the Accelleran CU anymore, so we
can't run the test. Remove the pipeline from the repository.

ci-scripts/yaml_files/5g_rfsimulator_accelleran/docker-compose.yaml

@@ -1,38 +0,0 @@
-services:
-    oai-du:
-        image: ${REGISTRY:-oaisoftwarealliance}/${GNB_IMG:-oai-gnb}:${TAG:-develop}
-        container_name: rfsim5g-oai-du
-        cap_drop:
-            - ALL
-        network_mode: "host"
-        environment:
-            USE_ADDITIONAL_OPTIONS: --sa --rfsim --MACRLCs.[0].local_n_address 172.21.16.109 --MACRLCs.[0].remote_n_address 172.21.6.22 --log_config.global_log_options level,nocolor,time
-        volumes:
-            - ../../conf_files/gnb-du.band78.106prb.rfsim.conf:/opt/oai-gnb/etc/gnb.conf
-        healthcheck:
-            test: /bin/bash -c "pgrep nr-softmodem"
-            interval: 10s
-            timeout: 5s
-            retries: 5
-    oai-nr-ue:
-        image: ${REGISTRY:-oaisoftwarealliance}/${NRUE_IMG:-oai-nr-ue}:${TAG:-develop}
-        container_name: rfsim5g-oai-nr-ue
-        cap_drop:
-            - ALL
-        cap_add:
-            - NET_ADMIN  # for interface bringup
-            - NET_RAW    # for ping
-        network_mode: "host"
-        environment:
-            USE_ADDITIONAL_OPTIONS: --sa --rfsim -r 106 --numerology 1 -C 3619200000 --uicc0.imsi 208990100001140 --rfsimulator.serveraddr 127.0.0.1 --log_config.global_log_options level,nocolor,time
-        depends_on:
-            - oai-du
-        devices:
-             - /dev/net/tun:/dev/net/tun
-        volumes:
-            - ../../conf_files/nrue.uicc.conf:/opt/oai-nr-ue/etc/nr-ue.conf
-        healthcheck:
-            test: /bin/bash -c "pgrep nr-uesoftmodem"
-            interval: 10s
-            timeout: 5s
-            retries: 5