Remove global Skia includes and associated shortcuts.

bug:13225538
Change-Id: I7deff74f5c0cd7b6ad0e120ffbc378c5eb8d75ee
diff --git a/core/config.mk b/core/config.mk
index c422bc8..57076ac 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -37,8 +37,7 @@
 	$(TOPDIR)frameworks/native/include \
 	$(TOPDIR)frameworks/native/opengl/include \
 	$(TOPDIR)frameworks/av/include \
-	$(TOPDIR)frameworks/base/include \
-	$(TOPDIR)external/skia/include
+	$(TOPDIR)frameworks/base/include
 SRC_HOST_HEADERS:=$(TOPDIR)tools/include
 SRC_LIBRARIES:= $(TOPDIR)libs
 SRC_SERVERS:= $(TOPDIR)servers