CHROMIUM: MALI: rockchip: Remove MALI_PLATFORM_POWER_DOWN_ONLY

It's now a config option, instead of a option in an include file.

BUG=b:149806107
TEST=build veyron_minnie

Change-Id: Id86056331d1c8e24f4bb5bbf1fb3772ebd2682ff
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
diff --git a/drivers/gpu/arm/midgard/platform/rk/mali_kbase_config_platform.h b/drivers/gpu/arm/midgard/platform/rk/mali_kbase_config_platform.h
index 551b598..9fa7f97 100644
--- a/drivers/gpu/arm/midgard/platform/rk/mali_kbase_config_platform.h
+++ b/drivers/gpu/arm/midgard/platform/rk/mali_kbase_config_platform.h
@@ -84,10 +84,3 @@
  * Attached value: pointer to @ref kbase_secure_ops
  */
 #define SECURE_CALLBACKS (NULL)
-
-/*
- * Both rk3288 and rk3399 get really unhappy unless you do this.
- * See https://crrev.com/c/1325749 for some context.
- */
-#define PLATFORM_POWER_DOWN_ONLY (1)
-