tests: net: wifi: Disable native/64 from tests

There are issues with 64 bit compilation in hostap so disable
native_sim/native/64 board from the tests. The board will be
enabled again after updating the hostap from upstream and fixing
the issues.

Fixes #80437

Signed-off-by: Jukka Rissanen <[email protected]>

Author: jukkar

tests/net/wifi/configs/testcase.yaml

@@ -6,7 +6,6 @@ common:
     - net
   platform_allow:
     - native_sim
-    - native_sim/native/64
 tests:
   wifi.build.crypto_default:
     extra_configs: