Don't use -a flag since old docker

.drone.yml

@@ -45,9 +45,8 @@ steps:
         from_secret: ssh_port
       command_timeout: 30m
       script:
-        - docker volume prune -a -f
+        - docker volume prune -f
         - docker image prune -f
-        - find ./infinityedge/events -type f -mtime +30 -delete
         - git clone https://github.com/Hi-Ray/infinityedge.git
         - cd infinityedge
         - git pull