codeowners: Fix entries for Wi-Fi

Wi-Fi OSAL now lives upstream, and only blobs live here, fix the
entries.

Signed-off-by: Chaitanya Tata <[email protected]>

Author: krish2718

CODEOWNERS

@@ -48,7 +48,4 @@ doc/*                                     @b-gent
 /nrf_dm/                                  @Tschet1 @eriksandgren
 /lc3/                                     @koffes @alexsven
 /nrf_fuel_gauge/                          @nordic-auko @aasinclair
-/nrf_wifi/                                @krish2718 @sachinthegreen @rado17 @rlubos
-/nrf_wifi/fw_bins/                        @udaynordic @rajb9 @srkanordic
-/nrf_wifi/fw_if/umac_if/inc/fw/           @udaynordic @rajb9 @srkanordic
-/nrf_wifi/hw_if/hal/inc/fw/               @udaynordic @rajb9 @srkanordic
+/nrf_wifi/                                @udaynordic @rajb9 @srkanordic