remove pixelflinger from healthd

The minui library has changed to no longer use libpixelflinger.  It
also offers a more efficient way of storing and loading frames of
animation; use it to represent the battery-full state images.

Also removes the unused battery_charge.png image.

Bug: 12131110
Change-Id: I6cc8b19f36a806c99cda30cc47b5968daf6b333b
diff --git a/healthd/Android.mk b/healthd/Android.mk
index 5cd5ce1..715c2ed 100644
--- a/healthd/Android.mk
+++ b/healthd/Android.mk
@@ -36,7 +36,7 @@
 
 LOCAL_C_INCLUDES := bootable/recovery
 
-LOCAL_STATIC_LIBRARIES := libbatteryservice libbinder libminui libpixelflinger_static libpng libz libutils libstdc++ libcutils liblog libm libc
+LOCAL_STATIC_LIBRARIES := libbatteryservice libbinder libminui libpng libz libutils libstdc++ libcutils liblog libm libc
 
 ifeq ($(strip $(BOARD_CHARGER_ENABLE_SUSPEND)),true)
 LOCAL_STATIC_LIBRARIES += libsuspend