test: net: socket: do not enable USE_PSA and all PSA features

This commit fixes #73337.

Before #72243 Mbed TLS was not using
USE_PSA and all PSA features were not enabled. After #72243
if BUILD_WITH_TFM is set:
- USE_PSA in Mbed TLS is enabled by default and
- all PSA features are enabled.

This commits reverts both changes for net.socket.register.tls
test case.

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