refactor: standardize help generation

plugins/storage/internal-functions

@@ -75,33 +75,6 @@ fn-storage-bind-mounts() {
   fi
 }
 
-storage_help_content_func() {
-  declare desc="return storage plugin help content"
-  cat <<help_content
-    storage:list <app>, List bind mounts for app's container(s) (host:container)
-    storage:mount <app> <host-dir:container-dir>, Create a new bind mount
-    storage:report [<app>] [<flag>], Displays a checks report for one or more apps
-    storage:unmount <app> <host-dir:container-dir>, Remove an existing bind mount
-help_content
-}
-
-cmd-storage-help() {
-  if [[ $1 == "storage:help" ]]; then
-    echo -e 'Usage: dokku storage[:COMMAND]'
-    echo ''
-    echo 'Mount local volume / directories inside containers.'
-    echo ''
-    echo 'Additional commands:'
-    storage_help_content_func | sort | column -c2 -t -s,
-  elif [[ $(ps -o command= $PPID) == *"--all"* ]]; then
-    storage_help_content_func
-  else
-    cat <<help_desc
-    storage, Mount local volume / directories inside containers
-help_desc
-  fi
-}
-
 cmd-storage-list() {
   declare desc="List all bound mounts"
   local cmd="storage:list"