Enabled IntroduceProjectRule. Approved by Vinayak.

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_stabilization@1008 eaa15691-b419-025a-1212-ee371bd00084
diff --git a/asterix-app/src/test/resources/optimizerts/results/const-folding.plan b/asterix-app/src/test/resources/optimizerts/results/const-folding.plan
index 70e2daa..413cf0c 100644
--- a/asterix-app/src/test/resources/optimizerts/results/const-folding.plan
+++ b/asterix-app/src/test/resources/optimizerts/results/const-folding.plan
@@ -1,4 +1,3 @@
 -- SINK_WRITE  |UNPARTITIONED|
-  -- STREAM_PROJECT  |UNPARTITIONED|
-    -- ASSIGN  |UNPARTITIONED|
-      -- EMPTY_TUPLE_SOURCE  |UNPARTITIONED|
+  -- ASSIGN  |UNPARTITIONED|
+    -- EMPTY_TUPLE_SOURCE  |UNPARTITIONED|