Remove obsolete dalvik.gc.type-precise

Bug: 18895001
Change-Id: Idb4df8de8232544539b61f92599bc6193d7647d0
diff --git a/device.mk b/device.mk
index 6ce56ac..ff52901 100644
--- a/device.mk
+++ b/device.mk
@@ -104,8 +104,6 @@
 PRODUCT_COPY_FILES += \
     device/moto/shamu/spn-conf.xml:system/etc/spn-conf.xml
 
-PRODUCT_TAGS += dalvik.gc.type-precise
-
 # This device is 560dpi.  However the platform doesn't
 # currently contain all of the bitmaps at 560dpi density so
 # we do this little trick to fall back to the xxhdpi version