manifest: switch to our update_engine

Change-Id: I8e350f274a1236005ce6cefc80f6ab4208f023fe
diff --git a/remove.xml b/remove.xml
index fc2d2eb..cec1016 100644
--- a/remove.xml
+++ b/remove.xml
@@ -23,5 +23,6 @@
     <remove-project name="platform/packages/modules/Permission"/>
 
     <remove-project name="platform/system/core" />
+    <remove-project name="platform/system/update_engine" />
     <remove-project name="platform/system/vold" />
 </manifest>