Make Jewish Calendar use DEVICE_CLASS_TIMSTAMP and remove timestamp attribute (#41397)

* Added "time" attribute

* Revert "Added "time" attribute"

This reverts commit 8adab9b78814aa1bc2adca242278e66ee9dd0b7f.

* Make DEVICE_CLASS use the DEVICE_CLASS_TIMESTAMP

* Removed unix timstamp attr

* keep attributes but delete the timestamp