mgmt: updatehub: remove legacy Mbed TLS crypto support

The long-term Zephyr's goal is rely only on PSA Crypto API for crypto
support in Zephyr and at the same time Mbed TLS will remove this support
from the next release.

Therefore this commit removes usage of legacy crypto hash support from
updatehub.

Signed-off-by: Valerio Setti <vsetti@baylibre.com>
3 files changed