samples: remove redundant (and incorrect) entry

Platform_allow already superseeds platform_exclude.
Also, it should be nrf5340_audio_dk/nrf5340/cpuapp/ns
not nrf5340_audio_dk/nrf5340/cpuapp_ns if needed.

Signed-off-by: Maciej Perkowski <[email protected]>

Author: PerMac

applications/nrf5340_audio/sample.yaml

@@ -5,7 +5,6 @@ common:
   integration_platforms:
     - nrf5340_audio_dk/nrf5340/cpuapp
   platform_allow: nrf5340_audio_dk/nrf5340/cpuapp
-  platform_exclude: nrf5340_audio_dk/nrf5340/cpuapp_ns
   sysbuild: true
   build_only: true
   tags: ci_build sysbuild

samples/bluetooth/nrf_auraconfig/sample.yaml

@@ -5,7 +5,6 @@ common:
   integration_platforms:
     - nrf5340_audio_dk/nrf5340/cpuapp
   platform_allow: nrf5340_audio_dk/nrf5340/cpuapp
-  platform_exclude: nrf5340_audio_dk/nrf5340/cpuapp_ns
   sysbuild: true
   build_only: true
   tags: ci_build sysbuild bluetooth