Apply suggestions from code review

Co-authored-by: Boris Zbarsky <bzbarsky@apple.com>

Author: jamesharrow

examples/energy-management-app/esp32/main/main.cpp

@@ -236,7 +236,7 @@ extern "C" void app_main()
     chip::rpc::Init();
 #endif
 
-    uint8_t features = static_cast<uint8_t>(chip::app::Clusters::DeviceEnergyManagement::sFeatureMap.Raw());
+    uint8_t features = static_cast<uint8_t>(DeviceEnergyManagement::sFeatureMap.Raw());
 
     ESP_LOGI(TAG, "==================================================");
 #if defined(CONFIG_ENABLE_EXAMPLE_EVSE_DEVICE)