GYP: remove stale skia_scalar gyp variable
DOCS_PREVIEW= https://skia.org/?cl=1417703013

Review URL: https://codereview.chromium.org/1417703013 .
diff --git a/make.py b/make.py
index d7bda84..7808329 100644
--- a/make.py
+++ b/make.py
@@ -10,7 +10,7 @@
 #   make clean

 #   make dm

 #   make bench BUILDTYPE=Release

-#   make gm GYP_DEFINES=skia_scalar=fixed BUILDTYPE=Release

+#   make gm GYP_DEFINES='skia_gpu=0' BUILDTYPE=Release

 #   make all

 

 import os