tests: fast_pair: Remove nRF54H20 target from Oberon testing

The default entropy device for nRF54H20 now uses PSA APIs from
Ironside. This is incompatible with Oberon so disable it in the
test.

Signed-off-by: Georgios Vasilakis <[email protected]>

Author: Vge0rge

tests/subsys/bluetooth/fast_pair/crypto/testcase.yaml

@@ -6,7 +6,6 @@ tests:
       - nrf52840dk/nrf52840
       - nrf5340dk/nrf5340/cpuapp
       - nrf5340dk/nrf5340/cpuapp/ns
-      - nrf54h20dk/nrf54h20/cpuapp
       - nrf54l15dk/nrf54l05/cpuapp
       - nrf54l15dk/nrf54l10/cpuapp
       - nrf54l15dk/nrf54l15/cpuapp
@@ -16,7 +15,6 @@ tests:
       - nrf52840dk/nrf52840
       - nrf5340dk/nrf5340/cpuapp
       - nrf5340dk/nrf5340/cpuapp/ns
-      - nrf54h20dk/nrf54h20/cpuapp
       - nrf54l15dk/nrf54l05/cpuapp
       - nrf54l15dk/nrf54l10/cpuapp
       - nrf54l15dk/nrf54l15/cpuapp