fix(device): prints error during delete when no devices found

This commit fixes the bug in the rio device delete command when no
devices are found and the command prints "Nothing to delete" and returns
a zero exit code. While this was mostly okay, it's not script friendly
or automation friendly. This commit fixes the bug.

riocli/device/delete.py

@@ -69,9 +69,9 @@ def delete_device(
         raise SystemExit(1) from e
 
     if not devices:
-        spinner.text = "No devices to delete"
-        spinner.ok(Symbols.SUCCESS)
-        return
+        spinner.text = click.style("Device(s) not found", Colors.RED)
+        spinner.red.fail(Symbols.ERROR)
+        raise SystemExit(1)
 
     headers = ['Name', 'Device ID', 'Status']
     data = [[d.name, d.uuid, d.status] for d in devices]