disable ethernet for vim2

Change-Id: I703453f6f9f9ae8802d25c3fa6606d12a6eabfb2
diff --git a/zircon/system/dev/board/vim2/vim-usb.cpp b/zircon/system/dev/board/vim2/vim-usb.cpp
index ae1b202..8b09f7f 100644
--- a/zircon/system/dev/board/vim2/vim-usb.cpp
+++ b/zircon/system/dev/board/vim2/vim-usb.cpp
@@ -159,7 +159,7 @@
     xhci_dev.bti_count = countof(xhci_btis);
 */
 
-#if 0
+#if 1
     constexpr size_t alignment = alignof(UsbConfig) > __STDCPP_DEFAULT_NEW_ALIGNMENT__
                                      ? alignof(UsbConfig)
                                      : __STDCPP_DEFAULT_NEW_ALIGNMENT__;