Delete an image
stream-cli chat delete-image --channel-type [channel-type] --channel-id [channel-id] --image-url [image-url] [flags]
-i, --channel-id string [required] Channel id to interact with
-t, --channel-type string [required] Channel type to interact with
-h, --help help for delete-image
-u, --image-url string [required] URL of the image to delete
--app string [optional] Application name to use as it's defined in the configuration file
--config string [optional] Explicit config file path