staging: rtl8723bs: remove ELEMENT_ID enum

The ELEMENT_ID enum is no longer used, remove it.

Signed-off-by: Ross Schmidt <ross.schm.dev@gmail.com>
Link: https://lore.kernel.org/r/20201208040733.379197-22-ross.schm.dev@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>