Revert "Turn on ART Service."

This reverts commit f109ea74c7cbb11dfe7bfdfc4d0c42e760535505.

Reason for revert: Broke a lot of things.

Change-Id: If9db83e6b2ac533560e9ab996695619901f29dbf
diff --git a/target/product/runtime_libart.mk b/target/product/runtime_libart.mk
index 68ed249..39666ea 100644
--- a/target/product/runtime_libart.mk
+++ b/target/product/runtime_libart.mk
@@ -175,6 +175,3 @@
       system/framework/%.odex \
       system/framework/%.vdex
 endif
-
-PRODUCT_SYSTEM_PROPERTIES += \
-    dalvik.vm.useartservice=true