Vulkan: remove the fallback path to load Vulkan driver am: 42649171 am:...

    result = LoadUpdatedDriver(&module);

    if (result == -ENOENT) {

        result = LoadBuiltinDriver(&module);

        if (result != 0) {

            // -ENOENT means the sphal namespace doesn't exist, not that there

            // is a problem with the driver.

            ALOGW_IF(

                result != -ENOENT,

                "Failed to load Vulkan driver into sphal namespace. This "

                "usually means the driver has forbidden library dependencies."

                "Please fix, this will soon stop working.");

            result =

                hw_get_module(HWVULKAN_HARDWARE_MODULE_ID,

                              reinterpret_cast<const hw_module_t**>(&module));

        }

    }

    if (result != 0) {

        android::GraphicsEnv::getInstance().setDriverLoaded(