remove avahi service for ssh on mesh peers

src/freedombone-image-customise

         install_zeronet
     fi
 
+    # ssh server not available on mesh peers
+    if [ -f $rootdir/etc/avahi/services/ssh.service ]; then
+        $rootdir/etc/avahi/services/ssh.service
+    fi
+
     MESH_SERVICE='mesh-setup.service'
     MESH_SETUP_DAEMON=$rootdir/etc/systemd/system/$MESH_SERVICE