[ASR] Delete duplicate implementations and docs#27625

Merged

andy31415 merged 2 commits intoproject-chip:masterfrom tx2rx:update_led_and_button_manager

Jul 6, 2023

+220-1,041

Commits on Jul 6, 2023

Delete duplicate led and button implementations, all move to examples/platform/asr
asriot
committed
remove support chips,that's already described in asr guide
asriot
committed