manifest: use forked art

Change-Id: I4d6f5e9dfee4ed3714d1e40fd93b0d17c9ac5590
diff --git a/remove.xml b/remove.xml
index bbf65ad..4d77c49 100644
--- a/remove.xml
+++ b/remove.xml
@@ -8,6 +8,7 @@
   <remove-project name="device/google/wahoo" />
   <remove-project name="device/google/wahoo-kernel" />
 
+  <remove-project name="platform/art" />
   <remove-project name="platform/bionic" />
   <remove-project name="platform/build" />
   <remove-project name="platform/build/soong" />