Revert "Wifi: Support check on device capability for 6GHZ"

This reverts commit 046257fd2e916ced9a16596d66e003402b90dce2.

Reason for revert: b/144576287 broke git_master 

Change-Id: I357df4a242a3ae22c793f8f4120199f04cbcdfa2
diff --git a/wifi/1.4/default/wifi_legacy_hal.cpp b/wifi/1.4/default/wifi_legacy_hal.cpp
index ae3c447..8139253 100644
--- a/wifi/1.4/default/wifi_legacy_hal.cpp
+++ b/wifi/1.4/default/wifi_legacy_hal.cpp
@@ -479,7 +479,7 @@
 std::pair<wifi_error, uint32_t> WifiLegacyHal::getSupportedFeatureSet(
     const std::string& iface_name) {
     feature_set set;
-    static_assert(sizeof(set) == sizeof(uint64_t),
+    static_assert(sizeof(set) == sizeof(uint32_t),
                   "Some feature_flags can not be represented in output");
     wifi_error status = global_func_table_.wifi_get_supported_feature_set(
         getIfaceHandle(iface_name), &set);