wlan: Disable 6GHz softAp

Driver actually does not support 6Ghz softAp at
current version. Hence, disable it

Bug: 231384422
Test: SoftAp can be enabled.
Change-Id: I47b39f3d31c1a94de338a2a22dc5b5495b1af1a1
diff --git a/rro_overlays/WifiOverlay/res/values/config.xml b/rro_overlays/WifiOverlay/res/values/config.xml
index 1be4632..c63ff26 100644
--- a/rro_overlays/WifiOverlay/res/values/config.xml
+++ b/rro_overlays/WifiOverlay/res/values/config.xml
@@ -100,9 +100,6 @@
            be checked via NL80211 interface -->
     <bool translatable="false" name="config_wifi11axSupportOverride">true</bool>
 
-    <!-- Wifi driver supports 6GHz band for softap -->
-    <bool translatable="false" name="config_wifiSoftap6ghzSupported">true</bool>
-
     <!-- Wifi driver supports WPA3 Simultaneous Authentication of Equals (WPA3-SAE) for softap -->
     <bool translatable="false" name="config_wifi_softap_sae_supported">true</bool>