Disabling build of SurfaceFlinger executable.

Build fails because it requires libsigchain library which is part of ART which we don't want to pull in.
Beside we don't really need surfaceflinger executable, unless for some test in which case we can enable it manually.

Change-Id: I2ec821fc60159dab0815491b6b596dded3a433ae

services/surfaceflinger/Android.mk

@@ -129,32 +129,32 @@ include $(BUILD_SHARED_LIBRARY)
 
 ###############################################################
 # build surfaceflinger's executable
-include $(CLEAR_VARS)
-
-LOCAL_LDFLAGS := -Wl,--version-script,art/sigchainlib/version-script.txt -Wl,--export-dynamic
-LOCAL_CFLAGS:= -DLOG_TAG=\"SurfaceFlinger\"
-LOCAL_CPPFLAGS:= -std=c++11
-
-LOCAL_SRC_FILES:= \
-	main_surfaceflinger.cpp
-
-LOCAL_SHARED_LIBRARIES := \
-	libsurfaceflinger \
-	libcutils \
-	liblog \
-	libbinder \
-	libutils \
-	libdl
-
-LOCAL_WHOLE_STATIC_LIBRARIES := libsigchain
-
-LOCAL_MODULE:= surfaceflinger
-
-ifdef TARGET_32_BIT_SURFACEFLINGER
-LOCAL_32_BIT_ONLY := true
-endif
-
-include $(BUILD_EXECUTABLE)
+# include $(CLEAR_VARS)
+#
+# LOCAL_LDFLAGS := -Wl,--version-script,art/sigchainlib/version-script.txt -Wl,--export-dynamic
+# LOCAL_CFLAGS:= -DLOG_TAG=\"SurfaceFlinger\"
+# LOCAL_CPPFLAGS:= -std=c++11
+#
+# LOCAL_SRC_FILES:= \
+# 	main_surfaceflinger.cpp
+#
+# LOCAL_SHARED_LIBRARIES := \
+# 	libsurfaceflinger \
+# 	libcutils \
+# 	liblog \
+# 	libbinder \
+# 	libutils \
+# 	libdl
+#
+# LOCAL_WHOLE_STATIC_LIBRARIES := libsigchain
+#
+# LOCAL_MODULE:= surfaceflinger
+#
+# ifdef TARGET_32_BIT_SURFACEFLINGER
+# LOCAL_32_BIT_ONLY := true
+# endif
+#
+# include $(BUILD_EXECUTABLE)
 
 ###############################################################
 # uses jni which may not be available in PDK