chore(mbedtls): remove hash configs

After the upgrade to mbedtls 3.6.0, some of these configuation limitations
are no longer present.

Size chages:
build config | executable | Delta
-------------|------------|-------
tbb ecdsa    | bl1        |  -176
-------------|------------|-------
tbb rsa      | bl1        |  -192
             | bl2        | -4096
-------------|------------|-------
drtm         | romlib     |  -576
-------------|------------|-------
spm          | romlib     |  -576
-------------|------------|-------
mb384        | romlib     | -1016

Change-Id: I019bc59adc93cf95f6f28ace9579e7bf1e785b62
Signed-off-by: Jimmy Brisson <jimmy.brisson@arm.com>
2 files changed