Remove unnecessary shared volume for SMs

Follow-up for https://gitlab.eurecom.fr/mosaic5g/flexric/-/commit/497b4d345171ab92b7060b68c12f4e2e58621444.

ci-scripts/yaml_files/5g_rfsimulator_flexric/docker-compose.yml

@@ -7,7 +7,6 @@ services:
                 ipv4_address: 192.168.70.150
         volumes:
             - ./conf/flexric.conf:/usr/local/etc/flexric/flexric.conf
-            - sharedXappLibs:/usr/local/lib/flexric/
         healthcheck:
             test: /bin/bash -c "pgrep nearRT-RIC"
             interval: 10s
@@ -95,7 +94,6 @@ services:
                 ipv4_address: 192.168.70.151
         volumes:
             - ../../conf_files/gnb.sa.band78.106prb.rfsim.flexric.conf:/opt/oai-gnb/etc/gnb.conf
-            - sharedXappLibs:/usr/local/lib/flexric/
         healthcheck:
             test: /bin/bash -c "pgrep nr-softmodem"
             interval: 10s
@@ -140,9 +138,6 @@ services:
             timeout: 5s
             retries: 5
 
-volumes:
-    sharedXappLibs:
-
 networks:
     public_net:
         name: oai-cn5g-public-net